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    promenade dance or promenade,[1][2] commonly called a prom, is a dance party for high school students. It may be offered in semi-formal black tie or informal suit for boys, and evening gowns for girls. This event is typically held at or near the end of the school year. There may be individual junior (11th grade) and senior (12th grade) proms or they may be combined.

    At a prom, a “Prom King” and a “Prom Queen” may be revealed. These are honorary titles awarded to students elected in a school-wide vote prior to the prom.[3] Other students may be honored with inclusion in a prom court. The selection method for a prom court is similar to that of homecoming queen/princess, king/prince, and court. Inclusion in a prom court may be a reflection of popularity of those students elected and their level of participation in school activities, such as clubs or sports.[4][5] The prom queen and prom king may be given crowns to wear. Members of the prom court may be given sashes to wear and photographed together.[6]

    Similar events, which may be locally inspired by debutante balls, take place in many other parts of the world. In Canada, the terms “formal” and “Grad” are often used, while in Australia and New Zealand, the terms school formal and ball are most commonly used for occasions equivalent to the American prom, and the event is usually held for students in Year 12. Many schools hold a formal graduation ball for finishing students at the end of the year in place of or as well as a formal. In Ireland, a debutante ball or debs may also be held. In Poland and Lithuania, high schools organize a “studniówka” (lt. “Šimtadienis”). The term “prom” has become more common in the United Kingdom and Canada because of the influence of American films and television shows, such as Grease. In South Africa, this event is widely known as a matric dance / matric farewell as students in their 12th year of school are called matric students. In South Asia, its equivalent is a farewell party.

    Variation exists between different dialects with regard to whether prom is used with the definite article or not—e.g., whether one says “go to the prom” or “go to prom”.[7]

    In the United States

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    History

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    A crowd gathers for a group photo at a junior prom in Canada, 1928.

    In the early days of high school proms, the nighttime dance served a function similar to a debutante ball. Early proms were times of firsts: the first adult social event for teenagers; the first time taking the family car out after dark; the first real dress-up affair; and so forth. Proms also served as a heavily documented occasion, similar to a milestone event such as first communion or a wedding, in which the participants were taking an important step into a new stage in their lives. In earlier days, the prom may have also served as an announcement of engagement for the ‘best couple’ after the prom court had been crowned and recognized.[8]

    Prom dates pose for a photo, 1997

    While high school yearbooks did not start covering proms and including prom pictures until the 1930s and 1940s, historians, including Meghan Bretz, believe proms may have existed at colleges as early as the late 19th century. The journal of a male student at Amherst College in 1894 recounts an invitation and trip to an early prom at neighboring Smith College for women. The word prom at that time may have been a fancy description for an ordinary junior or senior class dance, but prom soon took on larger-than-life meaning for high school students.[9]

    Proms worked their way down incrementally from college gatherings to high school extravaganzas. In the early 20th century, prom was a simple tea dance where high school seniors wore their Sunday best. In the 1920s and 1930s, prom expanded into an annual class banquet where students wore party clothes and danced afterward. As Americans gained more money and leisure time in the 1950s, proms became more extravagant and elaborate, bearing similarity to today’s proms. The high school gym may have been an acceptable setting for sophomore dances, but junior prom and senior balls gradually moved to hotel ballrooms and country clubs. Competition blossomed, as teens strove to have the best dress, the best mode of transportation, and the best-looking date. Competition for the prom court also intensified, as the designation of prom queen became an important distinction of popularity. Prom became the pinnacle event of a high school student’s social life.

    Today, prom continues to be a notable event in the social climate of high schools. Popular movies and novels attest to the importance of prom themes, prom dates, and prom queens. In some areas, the traditions of prom are not as rigid as they used to be, with many students attending as individuals or in groups instead of as couples. In 1975, U.S. First Daughter Susan Ford held her prom in the East Room of the White House.[10]

    Attire

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    Traditionally, boys dress in black or white formal wear, often tuxedos regardless of the time of the event, sometimes paired with ties or bow ties with vests or cummerbunds, in some cases in colors matching their date’s dress.

    Traditionally, girls wear dresses or evening gowns and adorn themselves with ladies’ jewelry such as earrings and a necklace. Traditionally, girls wear perfume and make-up such as eyeshadow, lipstick, mascara, and blush. Girls also traditionally wear a corsage, given to them by their dates, and girls give boys matching boutonnières to be worn on their lapels.

    By the 2000s, the clothes girls wear to prom have become more revealing due to the influence of celebrities and the mass media.[11]

    Promposals

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    A “promposal” (a portmanteau of “prom” and “proposal”) is a popular pre-prom tradition where a student asks another to go to the prom with them using some (usually elaborate) method and extra fanfare. A promposal is distinct from the normal prom ask, which typically includes the question, “Will you go to prom with me?” without additional spectacle. Promposals may include concepts and materials from posters, confetti, and balloons to the more viral, elaborate plans that give promposals their extravagant reputation. Examples include spelling “Prom?” with pepperoni on pizza,[12] organizing a flash mob,[13][14] graffitiing national park land,[15] and using a hot-air balloon.[16] Promposals, due to their flashy nature, often include a social media aspect like livestreaming, taking and posting videos, and other forms of memorializing on social media platforms.[17]

    Champagne Parties

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    A champagne party at a clubhouse, 2024

    Champagne parties, also known as “send-offs,” have become a prominent pre-prom tradition in the United States. These celebrations typically take place before high school proms and serve as elaborate gatherings that precede the formal prom event. The concept of champagne parties gained significant attention due to their flamboyant nature and the remarkable cultural custom they represent.[18]

    Originating in the 2010s[citation needed], champagne parties are characterized by their extravagance, creativity, and community involvement. Families host these events to celebrate and honor their teenagers as they prepare to depart for their proms. The festivities often include live music, themed decorations, red carpet entrances, and communal gatherings where friends, family, and neighbors come together to celebrate the youth’s journey into adulthood. Attire at champagne parties typically mirrors the elegance and formality of prom attire, with teenagers and sometimes even their guests donning stylish evening gowns, suits, and formalwear.

    Logistics and traditions

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    Prom dance

    Prom attendees may be limited by their schools to be juniors or seniors and guests under age 21.[19][20] Before prom, girls typically get their hair styled, often in groups as a social activity at a salon. Prom couples then gather at a park, garden, or their own and their dates’ houses for single and group photographs. Prom attendees may rent limousines[21] or party buses[22] to transport groups of friends from their homes to the prom venue. Some schools host their proms at hotel ballrooms, banquet halls, or other venues where weddings typically take place. The dance itself may have a band or DJ. At prom, a meal may be served. By the early 21st century, prom has become a multi-billion-dollar business in the United States, with each family spending hundreds to even thousands of dollars for the occasion.[23]

    Some high schools allow only the graduating class (seniors) to have a prom. Some schools also allow grade 11 (juniors) to have a prom, and in some cases, there is a combined junior/senior prom. Some American high schools that do not allow school-sponsored dances will host a junior/senior prom as a banquet instead of a dance. Typically, students still dress in formal attire and attend as couples. In recent years, American teens have started asking celebrities or famous models to their proms.[24][25]

    Post-prom

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    After the prom, parents or a community may host a prom after-party,[26] afterglow or post-prom[27][28] at a restaurant, entertainment venue, or a student’s home. Other traditions often include trips to nearby attractions, such as amusement parks, regional or local parks, or vacation houses. Some of these post-prom events are chaperoned[29] and some are unsupervised. Many post-proms (after-prom events) are at the school, and involve bringing entertainment such as interactive games, artists, and other entertainers to the school, as a means to deter inappropriate behaviors.

    In the United Kingdom

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    Students and their parents in the prom night

    In the United Kingdom prior to the 2000s, many secondary schools would hold events such as a summer ball to celebrate the end of term or a leavers ball to celebrate the end of schooling but, usually, these did not have the cultural or social significance of US-style proms.[citation needed]

    In the 1970s, school discos had been another tradition of semi-formal events being held at various times of the year, in particular during the Christmas period, although not all secondary schools would allow such events.[citation needed]

    During the 2000s, school proms became common at UK schools, apparently due to the influence of US TV shows.[30] The Daily Telegraph reported in 2012 that:[31]

    elaborate ‘passing out’ celebrations for Year 11 students (aged 15–16) and Year 12 (aged 16–17) have become a cultural phenomenon, stoking passions and rivalries, and refashioning the sense of what a school party should be. More than 85 percent of schools in Britain hold school Proms, which range from no-frills dinners in school halls to tailor-made extravaganzas in five-star hotels with such extras as ice- cream vans and photo booths.

    Schools in England, Wales, and Northern Ireland predominantly hold their prom, or school formal, at the end of secondary education in year 11 (ages 15/16) and the end of sixth form (aged 18).[citation needed]

    In Scotland, it is usually only held at the end of S6 (ages 17/18) because all high schools in Scotland have pupils up to age 18 years, whereas elsewhere in the UK, many students have to go to college or sixth form to study for A-Levels. Proms are usually held in June, after the end of year exams, although in Northern Ireland, they are usually held in the wintertime near the start of the school year. At Scottish formal events, boys usually wear kilts (kilts are also often seen in the other Celtic regions) and Highland dress outfitters often sell out in an area around this time of year due to demand from school events. Also in Scotland, it is customary for traditional Scottish country dancing (part of the curriculum of all secondary schools) to be included.[citation needed]

    In Australia

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    In Australia, formals are usually held in the spring and summer months for students in Year 10 and Year 12. Some schools may also organise a formal-style event for Year 11 students, aptly named a “social”. These events are widely considered to be a “rite of passage” for students.

    Traditionally the equivalent of an American prom was called a “deb” short for “debutante ball” in Australia. Later known as a “formal”.

    In some schools, Year 10 formals are not sanctioned or officially supported, as few students finish formal education at Year 10.[32][33] However Year 12 formals are typically officially sanctioned, with the school organising the event.

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    Africa

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    In Kenya, Ethiopia, Nigeria, Uganda, Ghana, and Tanzania most private schools with expatriates have proms or “end of year socials”.

    Egypt

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    In Egypt, private schools have proms similar to ones held in the United States but with slight differences. The prom is held for a maximum of 3 hours, where teachers attend and enjoy some time with their students. Then there is the “after-prom”, where no teachers or parents are allowed, during that time, the real party begins with all the students dancing and enjoying their time. The after-prom can continue to 4 am and 5 am. In some places, there is no mingling of males and females due to adherence to the Islamic codes.[34]

    South Africa

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    In South Africa, the equivalent of the American prom is the Matric Dance, taking place during the matriculation (i.e., final) year of high school (12th grade). It takes place towards the end of the third quarter, shortly before the spring break, after which the matriculation examinations commence. It usually takes the form of a formal dinner and dance. In most schools, the 11th-grade class is responsible for arranging the event. Sometimes teachers and parents also attend.

    The Matric Dance has become one of the most popular occasions on the South African social calendar, but not without much controversy for its cost that, it is said, “could be as much as some people’s weddings”. The magazine saying this elaborates: “Many parents will be torn between wanting to spoil their youngsters and wanting to resist the extravagance of handing over thousands of rands for a dress or suit that will probably only be worn once.”[35]

    Zambia

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    In Zambia, private schools have a “leavers’ dance/dinner” that is planned out by the grade 11 class and takes place on the Saturday after the Friday of their graduation ceremony. The dance is planned for the grade 12 class as well as the upper sixth form class and is normally done the 1st Friday after both of the classes are done writing their A-Level and IGCSE examinations. The dinner begins at 7 pm and the grade 11 class pose as the servers as well as the entertainment throughout the duration of the dinner. The dinner ends at midnight and is followed by the “after-party” which is celebrated at another venue (usually a club) with no parents and no teachers. Costs for renting out the venue are covered by selling tickets to outsiders and the party is usually planned by the graduating classes themselves.

    Asia

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    Hong Kong

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    In Hong Kong, prom culture is inherited from the western countries and is generally called a ball, such as Christmas Ball. This usually takes place during Christmas and summer break. This is more popular in the secondary education stage rather than in universities. Schools, excluding international schools, holding proms are usually single-sex schools where normally the student unions in the schools will cooperate with each other in organizing the event. In recent years, more and more individual unions got united and formed different student unions associations so as to organize large-scale events including large joint-school proms. Except for those proms within the academic field, there are also adult proms for charity yearly where celebrities and government officers always go to these functions.

    South and Central Asia

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    In India, Bhutan, Sri Lanka, and Nepal, the equivalent to some extent is a farewell party or farewell gathering. The outgoing students are given a warm send-off by the junior students and staff. All the seniors are felicitated with souvenirs and superlatives are given awards. There are also a couple of dances due to the influence of American culture and movies in India.

    In Pakistan, there is a prom or farewell function that takes place at the end of the college academic year. Students dress in formal attire. The event ends with a photography session with the graduation.

    In Afghanistan, there is a lunch party organized by the graduating students and called “graduation party.” This is mostly seen in the university level graduation after the 16th class with a bachelor’s degree, this day all the university seniors, faculty members, and professors are invited as honors. There is no mingling of males and females due to strict adherence to the Islamic codes.

    In Bangladesh, an event called ‘Rag Day’ is held at the end of 10th grade and 12th grade. There the school authority decorates the school and make musical arrangements. The students take celebratory preparations like making a uniform T-shirt (generally white) to commemorate the day. The juniors of the school also spend money, help organize the party and give farewell to the seniors. At the end of the party, graduating students play with powdered colors and signs on each other’s t-shirt to mark all the friendships they made in their school life.

    Western Asia

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    In Lebanon, proms are held after the graduation ceremony at night. They are usually held at hotels with a formal dress code, prom dates, rented cars, and, occasionally, prom kings and queens. The interaction between males and females is not limited.

    In Turkey, the equivalent is called Graduation Ball. The type of event and the rules applied are created by the student governments and school boards. It is a graduation tradition for seniors.

    Southeast Asia

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    In the Philippines, proms are popular in high schools. Prom usually takes place in the junior and senior years of high school (especially grades 9 to 12), normally around February or March. Proms are commonly known as JS prom, or, junior-senior prom. Conversely, if a high school has separate dances for juniors and seniors, the term “prom” is reserved for the juniors, and the dance for the seniors is called a “graduation ball” (often abbreviated as “grad ball” or simply “ball”). The associated student body generally organizes the event. Usually, a prom king and queen are chosen. The basis for the king and queen judgment is the beauty and the fashion of the nominee, not the popularity.

    In Singapore, proms are held at the near end of a senior year for secondary schools or tertiary institutions. Proms are normally held after the final examinations of all senior students before graduating.

    In Vietnam the equivalent to the prom is called liên hoan cuối năm. Some schools hold their liên hoan cuối năm at restaurants, but the majority of schools prefer simple “tea parties” with snacks and soft drinks inside their classrooms. Unlike in other countries, students don’t dress up in dresses or tuxedos; they simply wear school uniforms to the tea parties.

    Europe

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    Albania

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    In Albania, “mbrëmja e maturës”, as graduation night, is the event held at the end of the senior year. Every school organizes it independently and the event usually takes place in June or July.

    Benelux

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    In Belgium, as well as in some parts of the Netherlands, senior students celebrate their last 100 days of high school with a special day called Chrysostomos or 100-dagen feest (“100-days party”). Tradition states that on this winter day, seniors are allowed to pull pranks on their teachers and fellow students. Some schools handle a theme as dresscode, while others go for the traditional outfit: blue jeans, a black cotton jacket, a black hat (with a red or blue ribbon), and a whistle around the neck. Some even paint their faces and some seniors also carry a spray can (shaving cream or other fluids) to “attack” the non-seniors with. A noisy march through town is also part of the gig. Later during the day, students perform an act at school, usually a silly show involving school or a parody. In the evening, students head to a rented club to party. This involves dancing, singing, and plenty of beer to get a taste of fraternity life. Sometimes even teachers join the party to show that they too have a wild side. In the Netherlands, households where a child who has passed their high school exams often hang the student’s backpack on a flagpole which is attached to the front of the house.

    Bulgaria

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    In Bulgaria, the ball is called abiturientski bal and is held at the end of 12th grade, when you are aged 18/19. Preparations for the ball begin at the end of the 11th grade, because students are supposed to organize the whole event. It is celebrated in May, mainly on the 23rd, 24th, or 25th, after finishing exams. Students can bring a date to the event which is usually held in a restaurant or a club. Usually, before the main event there is a big gathering in front of the high school’s building, where graduates count to 12 (as in 12 grades) and take photos with each other before going to the restaurant called izprashtane (“farewell send off”). At the main event in the restaurant/hotel, there is music, usually pop and retro. Students are free to dance with whomever they want, even if they have come with a date. The school director and the 12th-grade teachers are also sometimes invited. There is usually an afterparty at a dance club. Some people even organize a second afterparty. After the prom night, students usually go on an excursion together for 3 to 5 days. The popular destinations are the Black Sea coast and Turkey. The event is often associated with excess in drinking and having sex.

    Czech Republic

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    In the Czech Republic, the last year in Gymnasium is celebrated with maturitní ples (“graduation ball”). This ball takes place before exams are taken, usually in January or February, the traditional season for balls during the Fasching (e.g., List of balls in Vienna). Normally, balls are formal but modern elements are included, too. The students invite their parents, other relatives, and friends to come to the ball with them. The balls usually have a theme and the classes perform choreographed dance routines at the beginning or during the evening. The students also receive a ribbon. It’s common that various artists are invited to perform at the ball, ranging from fireshow performers to famous celebrities. At midnight, the classes perform a “midnight surprise performance” – typically some sort of funny act. Sometimes several schools organize a joint event. The income is often used to finance a collective voyage of the students after the exams.

    A matriculation dinner in ČakovecCroatia, 2023.

    Former Yugoslavia

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    In Bosnia and Herzegovina, Croatia, North Macedonia and Serbia, maturalna večermaturska večer or matursko veče, as graduation night, is the event held at the end of the senior year. In Croatia, it is sometimes held in January or February.

    Denmark

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    In Denmark, the prom is called galla and takes place before the exams begin. The word galla refers to the dress code which is dresses for the women and suits for the men. The prom in Denmark is well known for keeping the traditional dance Les Lanciers, where the third graders of high school (the seniors) start the whole dance, then the 1st and 2nd graders join later on (the high school, called “gymnasium” in Denmark, is three years).

    Estonia

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    In Estonia, the equivalent of the prom is often called Saja päeva ball. The event takes place 100 days prior to graduation and may be organized with several schools altogether. Students can dance but other events may be involved, too, besides ballroom dancing. The clothes are much the same kind as in the proms of other countries.

    Finland

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    Vanhojen tanssit in the Lycée franco-finlandais d’Helsinki, a FrancoFinnish school in Helsinki, Finland

    In Finland, the equivalent of the prom is called vanhojen tanssit (senior ball). The event is held in February when third-year high school students (the abi) end regular classes in order to prepare for their final abitur exams, and the second year students become the oldest in the school. For the remainder of the school year, the second-year students are called vanhat (“the old”, or ” the seniors”).

    For the ball, the second-year students learn 10–15 formal dances, mostly old ballroom dances such as the mazurka or a polonaise. Lately, some schools have begun to allow students to perform their own choreographies with their chosen music, after or in between the old ballroom dances.

    In the past, the style was to dress in Victorian gowns and in an old-fashioned way, but these days the attire is similar to U.S. proms. Usually, girls wear a long princess gown or a ball gown and the boys wear a black suit. After the ball, the students sometimes attend a dinner in the evening, which is sometimes in a very formal restaurant. Students typically throw a party in the evening to celebrate further.

    France

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    Couple of students in Paris, 2013.

    In France, high school students have only recently experienced prom. On June 27, 2013, more than 300 students in Paris, France held a prom.[36][37] Event planning company White-Tie-Affair partnered up with multiple local companies to host the “Solidarity Prom Ball” charity gala. Food, drinks, venue, limousine,[38] as well as gift bags were sponsored by the different companies and provided for the students for free. On top of that, famous French music groups Psy4 de la Rime and Alibi Montana were the guest performance of the evening. All proceeds from the students’ entrance fee were donated to Donnons Leur Une Chance, a French non-profit organization[39] that will help realize educational projects.

    Germany and Austria

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    In Germany (and Austria), students celebrate their graduation from high school, or Gymnasium, with an Abifeier (from the graduation certificate or Abitur) or Maturaball (in Austria, the graduation exam is called Matura). In Germany, the events are informal and usually contain a series of student-organized activities that tend to make fun of teachers, sometimes with an extended hagiography about the favorite teacher. In Austria, the Maturaball is formal and can be seen as a synergy of proms and cotillions and often are highlights of the regional ball season (between November and the end of Carnival) referencing the glamour of the great ball tradition of the former Austrian-Hungarian monarchy. More like the prom is the German Abiball, that follows the official graduation ceremony. Here the students usually wear suits and ball gowns. The Abiball often follows a certain order with a welcome, introductions, an award ceremony for students, and sometimes an extended demonstration of all of the artistic outpourings of the students and staff. This is followed by a band (sometimes the school’s own band, if there is any) or a DJ playing music, usually starting with a waltz before moving on to other dancing. Alcohol is available at these events since the legal drinking age in Germany is 16 (for beer and wine), and most graduating students are 18 or older.

    Hungary

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    In Hungary, students receive a ribbon to mark the beginning of the preparation for their graduation. Students receive this ribbon at a ball called “szalagavató”, meaning the “inauguration of ribbons”. Many of the students wear this ribbon on their jackets or shirts until graduation. This prom-like evening dance is traditionally held in the ball season of January–February, but November-December has gained popularity in recent years as well. At the beginning of the ball, after a short speech by the headteacher, each student gets the ribbon from their form teacher who pins it on their jacket or dress. Then a series of choreographed dances begin, which the students learned during the months leading up to the event. The first one is traditionally a dance called “palotás” (palace dance) performed by students from different classes, then each graduating class performs their own class dance, and finally, there’s a waltz, which is also performed by students from different classes. Occasionally, the teachers of the school perform a dance as well. After the ball of the evening organized by the school, students usually go out at night to drink to bars and discos, even if some of them are below the drinking age (18 in Hungary).

    After they graduate, each class has its own party (without choreographed dances) usually at a restaurant, where their teachers are also invited. This is called érettségi bankett (graduation banquet).

    Ireland

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    In most of the Republic of Ireland, a school leavers’ dance is called a “Debs” or “Grads“, except in County Donegal, where, similar to most of the rest of Ulster, it is usually called “the Prom” or “the Formal”. In girls’ schools, it is commonly referred to as a Debs (short for “Debutante ball“, though less formal than the high-society event sharing that name in other countries), and in boys’ and coeducational schools, it may be referred to as a Grads or Grad (short for graduation). It is typically a formal dance for students who are graduating from secondary school (high school) in Ireland and is traditionally held between September and October. Alcohol is almost always served at these events, with a meal also being common.[40][41]

    Lithuania

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    In Lithuania, the prom is held after final exams, usually the same day when high school diplomas are presented. The event is called išleistuvės.

    Norway

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    In Norway, this event varies from school to school. It is usually held during the winter months, and is often called “Nyttårsball” which means “the new years ball.” The students are not allowed to bring people from outside the school. In Norway, it is the norm to have proms for 8th, 9th, and 10th graders at Norwegian middle school, and most of the time, there is no division between formal and grad – students can attend in whatever clothing they choose, such as traditional knee-long dresses.

    Poland

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    The Polish equivalent of the prom (studniówka) is a very popular event held each year throughout the country; the word itself means “of or relating to 100 days”. Most schools organize such an event about 100 days before the (matura) exam session. The first dance of the prom is the traditional Polish polonaise. In the past, the dress code for the studniówka was the same as for final exams, i.e. a white blouse or shirt with a dark skirt or trousers. As opposed to the studniówka, formal attire is required for the so-called Grand Ball (“bal maturalny”), held after graduation. Nowadays, as Grand Balls are rare, the studniówka has adopted a formal dress code.

    Portugal

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    In Portugal, there was no prom tradition. However, during the last few years schools have adopted such a celebration. Usually, they happen before the end of the school year, in May or June, and are called “Baile de Finalistas” (Finalist’s Ball). Male students customarily wear business suits with dress ties or optionally semi-formal black tie, while female students typically wear dresses or evening gowns, although most schools do not enforce a strict dress code beyond “vaguely formal”. It is usually organized by a student association, elected at the beginning of the school year by the students to organize school events.

    Although it happens in the majority of the country, on Madeira Island the tradition is a bit different. Instead of having the prom at the end of the year, the seniors have a ceremony called “Benção das Capas” (Cape’s Blessing), where they all use suits, including the girls, and a cape that is blessed by the city’s cardinal. Afterward, the students have dinner with their friends and family and then go to the prom. However, this prom isn’t formal, it ends up being similar to a club but in a different location, although sometimes it may happen at a club. Such a location is chosen by the student association. This ceremony ends up being very similar to one that the Portuguese students have when they finish college. The students only have a date to attend the first ceremony and they tend to go to the prom as groups.

    Romania

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    In Romania, distinct proms are held each year in high schools and college for both the graduating students as well as the newly enrolled ones. They are called graduation balls and freshmen (“boboci”, meaning “hatchlings” in Romanian) balls, respectively. They are usually not black tie (informal). The venue is chosen by the teaching staff and can be any place, including the school gym or auditorium, a club, or a restaurant. It is common to charge students an admission tax in order to offset the cost. One or more bands or singers are usually hired to provide entertainment. Often the event is sponsored by local businesses. Access is usually controlled and limited to students of that particular high school or university, but exceptions can be made for relatives and it is not uncommon for students from other institutions to try to crash a particular prom. Freshmen proms usually include a popularity contest of some sort, which designates 3 girls and 3 boys as places I, II and III “most popular” as chosen by student vote; the candidates have to undergo various entertaining challenges, which usually include pair dancing. Generally speaking, freshmen proms are the more popular, with college freshmen proms often being publicized as club events and promoted by radio stations, who take the opportunity to introduce bands and singers. Whereas graduation proms are more subdued and often not a public or even a school-wide event, many graduating classes choosing to restrict attendance just to the actual graduates and their teachers.

    Belarus and Russia

    [edit]

    Students at a prom in Moscow, Russia.

    In Belarus and Russia proms are called “Vypusknоi vechеr” (Выпускной вечер), which literally means “graduation evening”. They take place from the 18th to the 20th or the 23rd to the 25th of June, after the state exams are completed. Proms are never held on the 21st/22nd because they took place on June 21 in 1941, but on the 22nd all graduates were drafted to fight the German invasion during World War II. First, all graduates receive their diplomas. Students with higher marks receive them first. Afterward, the prom continues as a school ball, traditionally with classic dances. Students may choose restaurants, cafes, or ships rather than school grounds to hold the events. Proms may be held in a discothèque, but it must start with the school waltz. At the conclusion of the prom evening, it is tradition to walk the whole night and watch the sunrise in the morning (on a hill, if applicable, in Moscow – Sparrow Hills).

    Slovakia

    [edit]

    In Slovakia, the closest thing to prom is Stužková, an occasion when the seniors get together with their parents, partners and teachers to celebrate their upcoming graduation. It takes place in November or December. Each of the students receives a green ribbon with their name on it (thus the name Stužková, the “Ribbon Ball”). The principal and the class teacher are given big green ribbons as well. Many of the students wear this ribbon on their jackets or shirts until graduation. Stužková typically includes a banquet, skits and songs prepared by students, as well as dancing. Men wear formal suits and women formal dresses. One week before Stužková is a ceremony of Pečatenie triednej knihy (Sealing of the grades book) so that teachers will not be able to give tests or do examinations of the students until Stužková. It is connected with some story and recorded on camera and then used as a part of the video of Stužková. It usually starts at 6 p.m. and ends in the early hours of the next morning (4a.m.).

    Slovenia

    [edit]

    In Slovenia, the equivalent is Maturantski ples. It is held before the final exams between January and May, depending on the region and school. Students can bring dates and/or close family to the ball. It is a custom that each student dances the last dance of the first sequence, a Vienna Walzer, with his mother/her father. There is also a dinner and live music.

    Spain

    [edit]

    In some places in Spain, proms are also celebrated as after-school parties. These parties are commonly called “fiestas de graduación”, which can be translated as “graduation parties”.

    Sweden

    [edit]

    In Sweden, this kind of event is usually known as “Studentbalen”. The word “Studentbalen” is a proper noun meaning “The Student Ball,” while the word studentbal is a common noun that can refer to any formal dinner and dance at a Swedish university. Studentbalen is usually held during the final weeks before graduating and can be formal.

    Switzerland

    [edit]

    The Swiss equivalent of a prom is the bal de printemps.[42] Literally translated, this is a “Spring Ball.” At some schools in the German-speaking cantons, it is called “Maturaball.” This is not always organized by the schools, but sometimes by a student’s committee. It takes the most part before the final exams.

    Ukraine

    [edit]

    In Ukraine, prom is called “Vypusknyi vechir” or simply “vypusknyi” (Випускний вечір or simply Випускний), which literally means “graduation evening”. The date is defined by a school,;[43][44] usually any date from late May to mid-June. Usually, “vypusknyi” consists of two parts. The first one called “urochysta chastyna” (урочиста частина, that means “solemn part”), during which graduates receive their diplomas and certificates of honor for exceptional achievements during studying. The first part is conducted in the first part of the day, while the second part usually starts in the evening. The time between the two parts is used to walk around a city and take some pictures. The second part, “neofitsiyna chastyna” (неофіційна частина, that means “informal part”), starts as a school ball, but after a round of waltz, it transforms into a conventional party. The venue of the second part is determined by graduates and their parents; usually, it takes place in school, cafe, restaurant, on a boat or at the country. Traditionally, the second part is attended by graduates, their parents, and teachers. However, school teachers and parents don’t mix with graduates. The second part ends with sunrise. Usually, each city has one or a few locations that are the most popular for watching a sunrise. That is why schools try not to have proms on the same date.

    Oceania

    [edit]

    This section needs additional citations for verification. Please help improve this article by adding citations to reliable sources in this section. Unsourced material may be challenged and removed. (June 2023) (Learn how and when to remove this message)

    In Australia and New Zealand, the event may often be described as a Ball, School Formal, or simply Formal. If the event is in the final year of high school (Year 12 for Australia, Year 13 for New Zealand), it is sometimes called a Dinner-dance, Leavers’ Dinner or Debutante Ball but is also commonly called a School Formal or “Formal.” In Australia, some schools may also have a Valedictory Dinner, which is like the formal but has students, parents, and teachers instead of students and dates. Some Australian schools also have a Semi-formal for year 11 (16-17) students.

    As the name suggests, attire for the occasion is generally formal.[45] Boys will usually dress in a suit and tie. Girls traditionally wear formal gowns or dresses. In most cases a school formal is held at a local reception center or ballroom. A multicourse meal is generally provided. After the meal students generally dance to popular music played by a hired DJ or sometimes a band. Many students group together to go to the formal in a limousine. While parents do not attend a formal, teachers may act as chaperones for the formal and security guards are sometimes hired. The use of chaperones is intended to prevent the occurrence of violence and alcohol or drug use. Generally, after a formal, one or more after-parties are held.

    In addition to the high school graduation “formal” that marks the end of Year 12, in New South Wales, Australia, there is also an event that is sometimes held to celebrate completing the School Certificate at the end of Year 10, and always held after receiving Higher School Certificate at the end of Year 12 and includes a dinner and dance. The NSW Government announced the abolition of the School Certificate after 2011, with students in year 10 that year being the final cohort to sit the external examinations and receive the qualification. Subsequent Year 10 “Formals” have been deemed “unnecessary” due to the fact that the majority of Year 10 students now progress to Year 11. In previous years when 25–30% of students left high school in Year 10, the Formal was seen as a celebration for those departing, however, Year 10 Formals are still sometimes celebrated in the name of tradition. In year 11, students occasionally organize a “semi-formal” or “social” at the end of the school year, which is a more casual version of a formal. If a school has a sister school the social is typically organized in conjunction with them, as a “social event” for people to mingle and meet new people. The Valedictory Dinner (or Val as it is colloquially called) is an event that only occurs in Year 12. In New Zealand, most state school balls are held in the winter months, between June and August, while in Australia, a “formal” is held at the end of the year to mark the end of schooling, as is the Valedictory Dinner.

    In American Samoa, the typical Junior/Senior prom is held in most of the schools, an exception would be one of the private schools, which lets even 8th graders, freshmen, and sophomores participate in prom.

    Mexico

    [edit]

    In Mexico, most high schools and junior high (middle) schools have proms only for the graduating class (seniors), which is sometimes, depending on whether the school is private or public, preceded by a church service. The students dress in formal wear and may attend in couples. Some colleges have an after-graduation dinner dance.

    The formals, or as called in Mexico galas or graduaciones, are normally held in the school’s gymnasium or in the schoolyard if the school is located in a low-income neighbourhood; normally, though, public schools located in high- or medium-income neighbourhoods and private schools rent a ballroom, usually in a hotel, and students and parents may chip in to cover the costs of the party.

    multicourse meal is often offered in private schools’ proms; antojitos may be offered in low-budget proms instead.

    Central America, South America and the Caribbean

    [edit]

    Venezuelans also have a prom, commonly referred to as “graduación” or “fiesta de graduación.” It can consist of dancing, dinner, and live music.

    In Argentina, there are “fiestas de egresados” for students finishing their last year of high school. These consist of big parties hosted by the senior students in local discos or other venues, starting at 10 p.m. until about 5 or 6 in the morning. They have dinner with parents and other members of the family, which may be at another venue such as the school, and on a different night altogether. After midnight friends and other guests join the dance. The parties start in late September after most students come back from their senior trip, commonly to Bariloche, and last until early December, after the graduation. The students may dress formally or casually, and the seniors may wear themed costumes.

    In Brazil, bailes de formatura are usual at the end of high school and at college graduation. There is no crowning of a “king” or a “queen,” but evening gowns and suits are required. The family may or may not be included, and there may be a live band or DJ hired to command the music.

    In Chile, proms, or “fiestas de graduación” (graduation parties), are usually held at convention centers or hotels after the “licenciatura,” or graduation from high school. They can also be held after taking the PSU (Chilean University Entrance Exam) in December. Students are expected to dress formally. They are allowed to go with dates or friends. After the dinner, the dance continues through the night into the next day.

    In Colombia, many private schools usually have prom balls as well, usually consisting of a dinner, dancing, live music, and contests. They are usually held at hotels or clubs.

    In Panama and Costa Rica, like many other American countries, the “Baile de graduación” is celebrated after finishing high school, where grade 11 is also the last year. It usually takes place before graduation to celebrate the end of school. It’s normally held in hotels or saloons with a dance floor, music and dinner. It starts with the students walking through the dance floor and dancing a waltz. The dinner comes after, and the rest of the night consists of dancing and celebration.

    In Honduras, they are called “Cena de Graduacion”, they are held in luxury hotels, also familiars of the graduating students are invited. This event is held only for private schools, the act consists on formal graduation and delivery of their diplomas, after that, a dinner is held between the graduating students and their familiars or friends in the same room which later will become in a dance floor for everyone.

    In Peru, proms—”Fiestas de Promoción”—are usually held at hotels, convention centers, or big residences. The dress code is formal. Some parents and teachers are often invited, but they don’t stay the whole night. Dinner is served as well as alcoholic drinks and delicatessen. Breakfast is often served the next day, at around 6–7 am. There is a growing tradition to hold a pre-prom for the students in the class below the graduating class, and even a pre-pre-prom for the students in the class below that. Prom students often graduate being 15-16 years old and start university right after.

    In Trinidad and Tobago and most Caribbean countries, it is traditional for schools to hold a dance at the end of the CXC/GCE Advanced Level examination period. This is thrown simultaneously for fifth form and upper sixth form students during the months of June or July after the school’s official graduation ceremony. It is colloquially referred to as grad or gradz. Most gradz are held in popular clubs, hotels, halls or simply on the school’s grounds. Most schools allow students to bring dates, and a formal dress code is usually in effect.

    In Uruguay, the most usual is to make a senior trip after graduation instead of a graduation party, common destinations are Florianópolis and Bariloche. However some schools or the students themselves may also organize a party. Usually, a place is rented, and formal parties are held. Students are allowed to take one guest, as a friend or as a partner.

    Homeschool proms

    [edit]

    The concept of extending prom to homeschool students has been realized in recent years. Although some school districts in the United States and Canada allow homeschool students to attend the prom in the school district where they reside, many homeschool groups also organize their own proms. Some states, such as Oregon,[46] Ohio, Georgia, Tennessee, and Michigan, also host statewide homeschool proms, which any homeschool student in that state is welcome to attend.

    Proms that are specifically geared toward homeschool students can sometimes be significantly different from traditional high school proms. It is not uncommon for a homeschool student to attend a homeschool prom solo, rather than taking a date. Often the music played is chosen by the parents rather than the students.

    Adult proms

    [edit]

    An adult prom is a social event that is almost perfectly similar to a high school prom in terms of themes and attire, except that some adult proms also serve alcoholic beverages, and therefore most adult proms (at least in the U.S.) require those attending to be at least 21 years of age. The origin of adult prom is unclear, though two events which occurred in the 1990s are likely to have inspired the concept. Drew Barrymore stated in a late 1990s interview on Late Night with Conan O’Brien that she threw a prom party for herself and a few friends who never got to go to prom.[47] The Class of 1956 from Tenafly, New Jersey, whose prom was canceled at the time, held their own prom for their 35 Year Reunion in 1991.[48]

    In the Nobody’s Property novel series, character Mallorie Walcott, an event planner, mentions that she helped put her younger daughter Cassandra through college, in part, from the revenue she made from planning adult proms in the 1990s either for people who missed their actual high school proms in the 1970s and 1980s or simply wanted to re-live their prom night.

    A form of adult prom is the “second chance prom”. It is a big gathering of people who either did not go to prom, wanted to relive prom, or whose high school prom did not work out the way they had hoped.

    A slightly different take on the adult prom is that of the disabilities prom, dedicated to providing a prom experience to disabled adults at no charge to the attendees. These events are most often organized by non-profit organizations focusing on the disabled, or large churches.[49]

    In 2010, Theatrical producers in New York produced an audience participation theatrical play, set in an actual dance hall, called The Awesome 80s Prom,[50] where attendees were at a prom and got to vote on the king and queen from the cast of characters.

    Anti-proms and alternative proms

    [edit]

    See also: Anti-prom and Gay prom

    Anti-proms can be private, unofficial proms that are privately created, outside the control of the school, usually by people who disagree with their school’s prom policies. Some schools also include the anti-prom as an official event called MORP (Prom spelled backwards). MORP dances can be similar to a Sadie Hawkins dance where the girls ask a boy on a date, they can have informal attire, and the decor can be dark or less elegant.

    Proms for gay and lesbian people who did not attend their proms with a date of the same sex are popular in some cities.[51] These proms may also enable trans people who experienced prom before transitioning a chance to attend as the correct gender. A 1980 court decision, Fricke v. Lynch, required a public school in Rhode Island to allow same-sex dates, but discrimination against gay students continued for decades across the country.

    Controversies

    [edit]

    Proms have been the source of many controversies, many of which involve LGBT students.

    • According to Jackie Blount, during the McCarthy era “schools became implemented curricula intended to keep youth sexually straight. In effect, schools became fundamentally important agencies in the nationwide campaign to fight homosexuality.” This attitude further promoted heteronormative practices such as naming a prom king and prom queen, requiring strict gender conformity in dress, etc.[52]
    • In 2002, gay teenager Marc Hall was prohibited from taking his male date to his high school’s dance; Hall sued the school board and won.[53]
    • In 2009, Tyler Frost was suspended for attending his girlfriend’s prom, because his Christian high school disallowed dancing.[54] Although the principal at Frost’s school signed a paper allowing Frost to attend the prom, he said Frost would be suspended if he went, but Frost did so anyway.
    • In a 2010 Itawamba County School District prom controversy, lesbian high school senior Constance McMillen requested to take her girlfriend to the prom at Itawamba Agricultural High School in Fulton, Mississippi, where they were both students. The principal denied her request and prohibited her from wearing a tuxedo. When McMillen challenged the school’s policy, the prom was canceled, leading McMillen to sue the school.[55] Following a court decision forcing the school to hold the prom, local parents organized a second prom in secret, leaving Constance, her girlfriend and only 5 other students at the official prom.[56]
    • In 2014, student Katie Bialy from Holy Cross Catholic Secondary School, St. Catharines, Ontario, with the genetic condition Ehlers–Danlos syndrome (EDS) was not allowed to go to prom by her school principal Denice Robertson because her grades were not as good as required and she could not graduate.[57] Her condition had impaired her ability to do schoolwork and she asked the principal if she could go as a guest, but the principal refused her the option. This incident has resulted in public support for Bialy in social media and also increased awareness of her condition.
  • Horse

    The horse (Equus ferus caballus)[2][3] is a domesticatedone-toedhoofed mammal. It belongs to the taxonomic family Equidae and is one of two extant subspecies of Equus ferus. The horse has evolved over the past 45 to 55 million years from a small multi-toed creature, Eohippus, into the large, single-toed animal of today. Humans began domesticating horses around 4000 BCE, and their domestication is believed to have been widespread by 3000 BCE. Horses in the subspecies caballus are domesticated, although some domesticated populations live in the wild as feral horses. These feral populations are not true wild horses, which are horses that never have been domesticated. There is an extensive, specialized vocabulary used to describe equine-related concepts, covering everything from anatomy to life stages, size, colorsmarkingsbreedslocomotion, and behavior.

    Horses are adapted to run, allowing them to quickly escape predators, and possess a good sense of balance and a strong fight-or-flight response. Related to this need to flee from predators in the wild is an unusual trait: horses are able to sleep both standing up and lying down, with younger horses tending to sleep significantly more than adults.[4] Female horses, called mares, carry their young for approximately 11 months and a young horse, called a foal, can stand and run shortly following birth. Most domesticated horses begin training under a saddle or in a harness between the ages of two and four. They reach full adult development by age five, and have an average lifespan of between 25 and 30 years.

    Horse breeds are loosely divided into three categories based on general temperament: spirited “hot bloods” with speed and endurance; “cold bloods”, such as draft horses and some ponies, suitable for slow, heavy work; and “warmbloods“, developed from crosses between hot bloods and cold bloods, often focusing on creating breeds for specific riding purposes, particularly in Europe. There are more than 300 breeds of horse in the world today, developed for many different uses.

    Horses and humans interact in a wide variety of sport competitions and non-competitive recreational pursuits as well as in working activities such as police workagriculture, entertainment, and therapy. Horses were historically used in warfare, from which a wide variety of riding and driving techniques developed, using many different styles of equipment and methods of control. Many products are derived from horses, including meatmilkhidehair, bone, and pharmaceuticals extracted from the urine of pregnant mares.

    Biology

    Main article: Equine anatomy

    Diagram of a horse with some parts labeled.
    External anatomy of a horse[5][6]

    Lifespan and life stages

    Depending on breed, management and environment, the modern domestic horse has a life expectancy of 25 to 30 years.[7] Uncommonly, a few animals live into their 40s and, occasionally, beyond.[8] The oldest verifiable record was “Old Billy“, a 19th-century horse that lived to the age of 62.[7] In modern times, Sugar Puff, who had been listed in Guinness World Records as the world’s oldest living pony, died in 2007 at age 56.[9]

    Regardless of a horse or pony’s actual birth date, for most competition purposes a year is added to its age each January 1 of each year in the Northern Hemisphere[7][10] and each August 1 in the Southern Hemisphere.[11] The exception is in endurance riding, where the minimum age to compete is based on the animal’s actual calendar age.[12]

    The following terminology is used to describe horses of various ages:FoalA horse of either sex less than one year old. A nursing foal is sometimes called a suckling, and a foal that has been weaned is called a weanling.[13] Most domesticated foals are weaned at five to seven months of age, although foals can be weaned at four months with no adverse physical effects.[14]YearlingA horse of either sex that is between one and two years old.[15]ColtA male horse under the age of four.[16] A common terminology error is to call any young horse a “colt”, when the term actually only refers to young male horses.[17]FillyA female horse under the age of four.[13]MareA female horse four years old and older.[18]StallionA non-castrated male horse four years old and older.[19] The term “horse” is sometimes used colloquially to refer specifically to a stallion.[20]Geldingcastrated male horse of any age.[13]

    In horse racing, these definitions may differ: For example, in the British Isles, Thoroughbred horse racing defines colts and fillies as less than five years old.[21] However, Australian Thoroughbred racing defines colts and fillies as less than four years old.[22]

    Size and measurement

    The height of horses is measured at the highest point of the withers, where the neck meets the back.[23] This point is used because it is a stable point of the anatomy, unlike the head or neck, which move up and down in relation to the body of the horse.

    A large brown horse is chasing a small horse in a pasture.
    Size varies greatly among horse breeds, as with this full-sized horse and small pony.

    In English-speaking countries, the height of horses is often stated in units of hands and inches: one hand is equal to 4 inches (101.6 mm). The height is expressed as the number of full hands, followed by a point, then the number of additional inches, and ending with the abbreviation “h” or “hh” (for “hands high”). Thus, a horse described as “15.2 h” is 15 hands plus 2 inches, for a total of 62 inches (157.5 cm) in height.[24]

    The size of horses varies by breed, but also is influenced by nutrition. Light-riding horses usually range in height from 14 to 16 hands (56 to 64 inches, 142 to 163 cm) and can weigh from 380 to 550 kilograms (840 to 1,210 lb).[25] Larger-riding horses usually start at about 15.2 hands (62 inches, 157 cm) and often are as tall as 17 hands (68 inches, 173 cm), weighing from 500 to 600 kilograms (1,100 to 1,320 lb).[26] Heavy or draft horses are usually at least 16 hands (64 inches, 163 cm) high and can be as tall as 18 hands (72 inches, 183 cm) high. They can weigh from about 700 to 1,000 kilograms (1,540 to 2,200 lb).[27]

    The largest horse in recorded history was probably a Shire horse named Mammoth, who was born in 1848. He stood 21.2 14 hands (86.25 inches, 219 cm) high and his peak weight was estimated at 1,524 kilograms (3,360 lb).[28] The record holder for the smallest horse ever is Thumbelina, a fully mature miniature horse affected by dwarfism. She was 43 centimetres; 4.1 hands (17 in) tall and weighed 26 kg (57 lb).[29][30]

    Ponies

    Main article: Pony

    Ponies are taxonomically the same animals as horses. The distinction between a horse and pony is commonly drawn on the basis of height, especially for competition purposes. However, height alone is not dispositive; the difference between horses and ponies may also include aspects of phenotype, including conformation and temperament.

    The traditional standard for height of a horse or a pony at maturity is 14.2 hands (58 inches, 147 cm). An animal 14.2 hands (58 inches, 147 cm) or over is usually considered to be a horse and one less than 14.2 hands (58 inches, 147 cm) a pony,[31]: 12  but there are many exceptions to the traditional standard. In Australia, ponies are considered to be those under 14 hands (56 inches, 142 cm).[32] For competition in the Western division of the United States Equestrian Federation, the cutoff is 14.1 hands (57 inches, 145 cm).[33] The International Federation for Equestrian Sports, the world governing body for horse sport, uses metric measurements and defines a pony as being any horse measuring less than 148 centimetres (58.27 in) at the withers without shoes, which is just over 14.2 hands (58 inches, 147 cm), and 149 centimetres (58.66 in; 14.2+12 hands), with shoes.[34]

    Height is not the sole criterion for distinguishing horses from ponies. Breed registries for horses that typically produce individuals both under and over 14.2 hands (58 inches, 147 cm) consider all animals of that breed to be horses regardless of their height.[35] Conversely, some pony breeds may have features in common with horses, and individual animals may occasionally mature at over 14.2 hands (58 inches, 147 cm), but are still considered to be ponies.[36]

    Ponies often exhibit thicker manes, tails, and overall coat. They also have proportionally shorter legs, wider barrels, heavier bone, shorter and thicker necks, and short heads with broad foreheads. They may have calmer temperaments than horses and also a high level of intelligence that may or may not be used to cooperate with human handlers.[31]: 11–12 [failed verification] Small size, by itself, is not an exclusive determinant. For example, the Shetland pony which averages 10 hands (40 inches, 102 cm), is considered a pony.[31]: 12 Conversely, breeds such as the Falabella and other miniature horses, which can be no taller than 76 centimetres; 7.2 hands (30 in), are classified by their registries as very small horses, not ponies.[37]

    Genetics

    Horses have 64 chromosomes.[38] The horse genome was sequenced in 2007. It contains 2.7 billion DNA base pairs,[39] which is larger than the dog genome, but smaller than the human genome or the bovine genome.[40] The map is available to researchers.[41]

    Colors and markings

    Two horses in a field. The one on the left is a dark brown with a black mane and tail. The one on the right is a light red all over.
    Bay (left) and chestnut (sometimes called “sorrel”) are two of the most common coat colors, seen in almost all breeds.

    Main articles: Equine coat colorEquine coat color genetics, and Horse markings

    Horses exhibit a diverse array of coat colors and distinctive markings, described by a specialized vocabulary. Often, a horse is classified first by its coat color, before breed or sex.[42] Horses of the same color may be distinguished from one another by white markings,[43] which, along with various spotting patterns, are inherited separately from coat color.[44]

    Many genes that create horse coat colors and patterns have been identified. Current genetic tests can identify at least 13 different alleles influencing coat color,[45] and research continues to discover new genes linked to specific traits. The basic coat colors of chestnut and black are determined by the gene controlled by the Melanocortin 1 receptor,[46] also known as the “extension gene” or “red factor”.[45] Its recessive form is “red” (chestnut) and its dominant form is black.[47] Additional genes control suppression of black color to point coloration that results in a bay, spotting patterns such as pinto or leoparddilution genes such as palomino or dun, as well as greying, and all the other factors that create the many possible coat colors found in horses.[45]

    Horses that have a white coat color are often mislabeled; a horse that looks “white” is usually a middle-aged or older gray. Grays are born a darker shade, get lighter as they age, but usually keep black skin underneath their white hair coat (with the exception of pink skin under white markings). The only horses properly called white are born with a predominantly white hair coat and pink skin, a fairly rare occurrence.[47] Different and unrelated genetic factors can produce white coat colors in horses, including several different alleles of dominant white and the sabino-1 gene.[48] However, there are no “albino” horses, defined as having both pink skin and red eyes.[49]

    Reproduction and development

    Main article: Horse breeding

    Mare with a foal

    Gestation lasts approximately 340 days, with an average range 320–370 days,[50][51] and usually results in one foal; twins are rare.[52] Horses are a precocial species, and foals are capable of standing and running within a short time following birth.[53] Foals are usually born in the spring. The estrous cycle of a mare occurs roughly every 19–22 days and occurs from early spring into autumn. Most mares enter an anestrus period during the winter and thus do not cycle in this period.[54] Foals are generally weaned from their mothers between four and six months of age.[55]

    Horses, particularly colts, are sometimes physically capable of reproduction at about 18 months, but domesticated horses are rarely allowed to breed before the age of three, especially females.[31]: 129  Horses four years old are considered mature, although the skeleton normally continues to develop until the age of six; maturation also depends on the horse’s size, breed, sex, and quality of care. Larger horses have larger bones; therefore, not only do the bones take longer to form bone tissue, but the epiphyseal plates are larger and take longer to convert from cartilage to bone. These plates convert after the other parts of the bones, and are crucial to development.[56]

    Depending on maturity, breed, and work expected, horses are usually put under saddle and trained to be ridden between the ages of two and four.[57] Although Thoroughbred race horses are put on the track as young as the age of two in some countries,[58] horses specifically bred for sports such as dressage are generally not put under saddle until they are three or four years old, because their bones and muscles are not solidly developed.[59] For endurance riding competition, horses are not deemed mature enough to compete until they are a full 60 calendar months (five years) old.[12]

    Anatomy

    Main articles: Equine anatomyMuscular system of the horseRespiratory system of the horse, and Circulatory system of the horse

    Skeletal system

    Main article: Skeletal system of the horse

    Diagram of a horse skeleton with major parts labeled.
    The skeletal system of a modern horse

    The horse skeleton averages 205 bones.[60] A significant difference between the horse skeleton and that of a human is the lack of a collarbone—the horse’s forelimbs are attached to the spinal column by a powerful set of muscles, tendons, and ligaments that attach the shoulder blade to the torso. The horse’s four legs and hooves are also unique structures. Their leg bones are proportioned differently from those of a human. For example, the body part that is called a horse’s “knee” is actually made up of the carpal bones that correspond to the human wrist. Similarly, the hock contains bones equivalent to those in the human ankle and heel. The lower leg bones of a horse correspond to the bones of the human hand or foot, and the fetlock (incorrectly called the “ankle”) is actually the proximal sesamoid bones between the cannon bones (a single equivalent to the human metacarpal or metatarsal bones) and the proximal phalanges, located where one finds the “knuckles” of a human. A horse also has no muscles in its legs below the knees and hocks, only skin, hair, bone, tendonsligamentscartilage, and the assorted specialized tissues that make up the hoof.[61]

    Hooves

    Main articles: Horse hoofHorseshoe, and Farrier

    The critical importance of the feet and legs is summed up by the traditional adage, “no foot, no horse”.[62] The horse hoof begins with the distal phalanges, the equivalent of the human fingertip or tip of the toe, surrounded by cartilage and other specialized, blood-rich soft tissues such as the laminae. The exterior hoof wall and horn of the sole is made of keratin, the same material as a human fingernail.[63] The result is that a horse, weighing on average 500 kilograms (1,100 lb),[64] travels on the same bones as would a human on tiptoe.[65] For the protection of the hoof under certain conditions, some horses have horseshoes placed on their feet by a professional farrier. The hoof continually grows, and in most domesticated horses needs to be trimmed (and horseshoes reset, if used) every five to eight weeks,[66] though the hooves of horses in the wild wear down and regrow at a rate suitable for their terrain.

    Teeth

    Main article: Horse teeth

    Horses are adapted to grazing. In an adult horse, there are 12 incisors at the front of the mouth, adapted to biting off the grass or other vegetation. There are 24 teeth adapted for chewing, the premolars and molars, at the back of the mouth. Stallions and geldings have four additional teeth just behind the incisors, a type of canine teeth called “tushes”. Some horses, both male and female, will also develop one to four very small vestigial teeth in front of the molars, known as “wolf” teeth, which are generally removed because they can interfere with the bit. There is an empty interdental space between the incisors and the molars where the bit rests directly on the gums, or “bars” of the horse’s mouth when the horse is bridled.[67]

    An estimate of a horse’s age can be made from looking at its teeth. The teeth continue to erupt throughout life and are worn down by grazing. Therefore, the incisors show changes as the horse ages; they develop a distinct wear pattern, changes in tooth shape, and changes in the angle at which the chewing surfaces meet. This allows a very rough estimate of a horse’s age, although diet and veterinary care can also affect the rate of tooth wear.[7]

    Digestion

    Main articles: Equine digestive system and Equine nutrition

    Horses are herbivores with a digestive system adapted to a forage diet of grasses and other plant material, consumed steadily throughout the day. Therefore, compared to humans, they have a relatively small stomach but very long intestines to facilitate a steady flow of nutrients. A 450-kilogram (990 lb) horse will eat 7 to 11 kilograms (15 to 24 lb) of food per day and, under normal use, drink 38 to 45 litres (8.4 to 9.9 imp gal; 10 to 12 US gal) of water. Horses are not ruminants, having only one stomach, like humans. But unlike humans, they can digest cellulose, a major component of grass, through the process of hindgut fermentation. Cellulose fermentation by symbiotic bacteria and other microbes occurs in the cecum and the large intestine. Horses cannot vomit, so digestion problems can quickly cause colic, a leading cause of death.[68] Although horses do not have a gallbladder, they tolerate high amounts of fat in their diet.[69][70]

    Senses

    Close up of a horse eye, which is dark brown with lashes on the top eyelid
    A horse’s eye

    See also: Equine vision

    The horses’ senses are based on their status as prey animals, where they must be aware of their surroundings at all times.[71] The equine eye is one of the largest of any land mammal.[72] Horses are lateral-eyed, meaning that their eyes are positioned on the sides of their heads.[73] This means that horses have a range of vision of more than 350°, with approximately 65° of this being binocular vision and the remaining 285° monocular vision.[74] Horses have excellent day and night vision, but they have two-color, or dichromatic vision; their color vision is somewhat like red-green color blindness in humans, where certain colors, especially red and related colors, appear as a shade of green.[75]

    Their sense of smell, while much better than that of humans, is not quite as good as that of a dog. It is believed to play a key role in the social interactions of horses as well as detecting other key scents in the environment. Horses have two olfactory centers. The first system is in the nostrils and nasal cavity, which analyze a wide range of odors. The second, located under the nasal cavity, are the vomeronasal organs, also called Jacobson’s organs. These have a separate nerve pathway to the brain and appear to primarily analyze pheromones.[76]

    A horse’s hearing is good,[71] and the pinna of each ear can rotate up to 180°, giving the potential for 360° hearing without having to move the head.[77] Noise affects the behavior of horses and certain kinds of noise may contribute to stress—a 2013 study in the UK indicated that stabled horses were calmest in a quiet setting, or if listening to country or classical music, but displayed signs of nervousness when listening to jazz or rock music. This study also recommended keeping music under a volume of 21 decibels.[78] An Australian study found that stabled racehorses listening to talk radio had a higher rate of gastric ulcers than horses listening to music, and racehorses stabled where a radio was played had a higher overall rate of ulceration than horses stabled where there was no radio playing.[79]

    Horses have a great sense of balance, due partly to their ability to feel their footing and partly to highly developed proprioception—the unconscious sense of where the body and limbs are at all times.[80] A horse’s sense of touch is well-developed. The most sensitive areas are around the eyes, ears, and nose.[81] Horses are able to sense contact as subtle as an insect landing anywhere on the body.[82]

    Horses have an advanced sense of taste, which allows them to sort through fodder and choose what they would most like to eat,[83] and their prehensile lips can easily sort even small grains. Horses generally will not eat poisonous plants, however, there are exceptions; horses will occasionally eat toxic amounts of poisonous plants even when there is adequate healthy food.[84]

    Movement

    Main articles: Horse gaitTrotCanter, and Ambling

    • Walk 5–8 km/h (3.1–5.0 mph)
    • Trot 8–13 km/h (5.0–8.1 mph)
    • Pace 8–13 km/h (5.0–8.1 mph)
    • Canter 16–27 km/h (9.9–16.8 mph)
    • Gallop 40–48 km/h (25–30 mph), record: 70.76 km/h (43.97 mph)

    All horses move naturally with four basic gaits:[85]

    • the four-beat walk, which averages 6.4 kilometres per hour (4.0 mph);
    • the two-beat trot or jog at 13 to 19 kilometres per hour (8.1 to 11.8 mph) (faster for harness racing horses);
    • the canter or lope, a three-beat gait that is 19 to 24 kilometres per hour (12 to 15 mph);
    • the gallop, which averages 40 to 48 kilometres per hour (25 to 30 mph),[86] but the world record for a horse galloping over a short, sprint distance is 70.76 kilometres per hour (43.97 mph).[87]

    Besides these basic gaits, some horses perform a two-beat pace, instead of the trot.[88] There also are several four-beat ‘ambling‘ gaits that are approximately the speed of a trot or pace, though smoother to ride. These include the lateral rackrunning walk, and tölt as well as the diagonal fox trot.[89] Ambling gaits are often genetic in some breeds, known collectively as gaited horses.[90] These horses replace the trot with one of the ambling gaits.[91]

    Behavior

    Main articles: Horse behavior and Stable vicesDuration: 3 seconds.0:03Horse neigh

    Horses are prey animals with a strong fight-or-flight response. Their first reaction to a threat is to startle and usually flee, although they will stand their ground and defend themselves when flight is impossible or if their young are threatened.[92] They also tend to be curious; when startled, they will often hesitate an instant to ascertain the cause of their fright, and may not always flee from something that they perceive as non-threatening. Most light horse riding breeds were developed for speed, agility, alertness and endurance; natural qualities that extend from their wild ancestors. However, through selective breeding, some breeds of horses are quite docile, particularly certain draft horses.[93]

    Horses fighting as part of herd dominance behaviour

    Horses are herd animals, with a clear hierarchy of rank, led by a dominant individual, usually a mare. They are also social creatures that are able to form companionship attachments to their own species and to other animals, including humans. They communicate in various ways, including vocalizations such as nickering or whinnying, mutual grooming, and body language. Many horses will become difficult to manage if they are isolated, but with training, horses can learn to accept a human as a companion, and thus be comfortable away from other horses.[94] However, when confined with insufficient companionship, exercise, or stimulation, individuals may develop stable vices, an assortment of bad habits, mostly stereotypies of psychological origin, that include wood chewing, wall kicking, “weaving” (rocking back and forth), and other problems.[95]

    Intelligence and learning

    Studies have indicated that horses perform a number of cognitive tasks on a daily basis, meeting mental challenges that include food procurement and identification of individuals within a social system. They also have good spatial discrimination abilities.[96] They are naturally curious and apt to investigate things they have not seen before.[97] Studies have assessed equine intelligence in areas such as problem solving, speed of learning, and memory. Horses excel at simple learning, but also are able to use more advanced cognitive abilities that involve categorization and concept learning. They can learn using habituationdesensitizationclassical conditioning, and operant conditioning, and positive and negative reinforcement.[96] One study has indicated that horses can differentiate between “more or less” if the quantity involved is less than four.[98]

    Domesticated horses may face greater mental challenges than wild horses, because they live in artificial environments that prevent instinctive behavior whilst also learning tasks that are not natural.[96] Horses are animals of habit that respond well to regimentation, and respond best when the same routines and techniques are used consistently. One trainer believes that “intelligent” horses are reflections of intelligent trainers who effectively use response conditioning techniques and positive reinforcement to train in the style that best fits with an individual animal’s natural inclinations.[99]

    Temperament

    Main articles: Draft horseWarmbloodOriental horse, and Hot-blooded horse

    Horses are mammals. As such, they are warm-blooded, or endothermic creatures, as opposed to cold-blooded, or poikilothermic animals. However, these words have developed a separate meaning in the context of equine terminology, used to describe temperament, not body temperature. For example, the “hot-bloods“, such as many race horses, exhibit more sensitivity and energy,[100] while the “cold-bloods”, such as most draft breeds, are quieter and calmer.[101] Sometimes “hot-bloods” are classified as “light horses” or “riding horses”,[102] with the “cold-bloods” classified as “draft horses” or “work horses”.[103]

    a sepia-toned engraving from an old book, showing 11 horses of different breeds and sizes in nine different illustrations
    Illustration of assorted breeds; slim, light hotbloods, medium-sized warmbloods and draft and pony-type coldblood breeds

    “Hot blooded” breeds include “oriental horses” such as the Akhal-TekeArabian horseBarb, and now-extinct Turkoman horse, as well as the Thoroughbred, a breed developed in England from the older oriental breeds.[100] Hot bloods tend to be spirited, bold, and learn quickly. They are bred for agility and speed.[104] They tend to be physically refined—thin-skinned, slim, and long-legged.[105] The original oriental breeds were brought to Europe from the Middle East and North Africa when European breeders wished to infuse these traits into racing and light cavalry horses.[106][107]

    Muscular, heavy draft horses are known as “cold bloods.” They are bred not only for strength, but also to have the calm, patient temperament needed to pull a plow or a heavy carriage full of people.[101] They are sometimes nicknamed “gentle giants”.[108] Well-known draft breeds include the Belgian and the Clydesdale.[108] Some, like the Percheron, are lighter and livelier, developed to pull carriages or to plow large fields in drier climates.[109] Others, such as the Shire, are slower and more powerful, bred to plow fields with heavy, clay-based soils.[110] The cold-blooded group also includes some pony breeds.[111]

    Warmblood” breeds, such as the Trakehner or Hanoverian, developed when European carriage and war horses were crossed with Arabians or Thoroughbreds, producing a riding horse with more refinement than a draft horse, but greater size and milder temperament than a lighter breed.[112] Certain pony breeds with warmblood characteristics have been developed for smaller riders.[113] Warmbloods are considered a “light horse” or “riding horse”.[102]

    Today, the term “Warmblood” refers to a specific subset of sport horse breeds that are used for competition in dressage and show jumping.[114] Strictly speaking, the term “warm blood” refers to any cross between cold-blooded and hot-blooded breeds.[115] Examples include breeds such as the Irish Draught or the Cleveland Bay. The term was once used to refer to breeds of light riding horse other than Thoroughbreds or Arabians, such as the Morgan horse.[104]

    Sleep patterns

    See also: Horse sleep patterns and Sleep in non-humans

    Two horses in a pasture, one is standing beside the other that is laying down.
    When horses lie down to sleep, others in the herd remain standing, awake, or in a light doze, keeping watch.

    Horses are able to sleep both standing up and lying down. In an adaptation from life in the wild, horses are able to enter light sleep by using a “stay apparatus” in their legs, allowing them to doze without collapsing.[116] Horses sleep better when in groups because some animals will sleep while others stand guard to watch for predators. A horse kept alone will not sleep well because its instincts are to keep a constant eye out for danger.[117]

    Unlike humans, horses do not sleep in a solid, unbroken period of time, but take many short periods of rest. Horses spend four to fifteen hours a day in standing rest, and from a few minutes to several hours lying down. Total sleep time in a 24-hour period may range from several minutes to a couple of hours,[117] mostly in short intervals of about 15 minutes each.[118] The average sleep time of a domestic horse is said to be 2.9 hours per day.[119]

    Horses must lie down to reach REM sleep. They only have to lie down for an hour or two every few days to meet their minimum REM sleep requirements.[117] However, if a horse is never allowed to lie down, after several days it will become sleep-deprived, and in rare cases may suddenly collapse because it slips, involuntarily, into REM sleep while still standing.[120] This condition differs from narcolepsy, although horses may also suffer from that disorder.[121]

    Taxonomy and evolution

    Diagram of evolution in horses showing size development, biometrical changes in the cranium and reduction of toes (left forefoot)

    Main articles: Evolution of the horseEquus (genus), and Equidae

    The horse adapted to survive in areas of wide-open terrain with sparse vegetation, surviving in an ecosystem where other large grazing animals, especially ruminants, could not.[122] Horses and other equids are odd-toed ungulates of the order Perissodactyla, a group of mammals dominant during the Tertiary period. In the past, this order contained 14 families, but only three—Equidae (the horse and related species), Tapiridae (the tapir), and Rhinocerotidae (the rhinoceroses)—have survived to the present day.[123]

    The earliest known member of the family Equidae was the Hyracotherium, which lived between 45 and 55 million years ago, during the Eocene period. It had 4 toes on each front foot, and 3 toes on each back foot.[124] The extra toe on the front feet soon disappeared with the Mesohippus, which lived 32 to 37 million years ago.[125] Over time, the extra side toes shrank in size until they vanished. All that remains of them in modern horses is a set of small vestigial bones on the leg below the knee,[126] known informally as splint bones.[127] Their legs also lengthened as their toes disappeared until they were a hooved animal capable of running at great speed.[126] By about 5 million years ago, the modern Equus had evolved.[128] Equid teeth also evolved from browsing on soft, tropical plants to adapt to browsing of drier plant material, then to grazing of tougher plains grasses. Thus proto-horses changed from leaf-eating forest-dwellers to grass-eating inhabitants of semi-arid regions worldwide, including the steppes of Eurasia and the Great Plains of North America.

    By about 15,000 years ago, Equus ferus was a widespread holarctic species. Horse bones from this time period, the late Pleistocene, are found in Europe, Eurasia, Beringia, and North America.[129] Yet between 10,000 and 7,600 years ago, the horse became extinct in North America.[130][131][132] The reasons for this extinction are not fully known, but one theory notes that extinction in North America paralleled human arrival.[133] Another theory points to climate change, noting that approximately 12,500 years ago, the grasses characteristic of a steppe ecosystem gave way to shrub tundra, which was covered with unpalatable plants.[134]

    Wild species surviving into modern times

    Three tan-colored horses with upright manes. Two horses nip and paw at each other, while the third moves towards the camera. They stand in an open, rocky grassland, with forests in the distance.
    A small herd of Przewalski’s Horses

    Main article: Wild horse

    A truly wild horse is a species or subspecies with no ancestors that were ever successfully domesticated. Therefore, most “wild” horses today are actually feral horses, animals that escaped or were turned loose from domestic herds and the descendants of those animals.[135] Only two wild subspecies, the tarpan and the Przewalski’s horse, survived into recorded history and only the latter survives today.

    The Przewalski’s horse (Equus ferus przewalskii), named after the Russian explorer Nikolai Przhevalsky, is a rare Asian animal. It is also known as the Mongolian wild horse; Mongolian people know it as the taki, and the Kyrgyz people call it a kirtag. The subspecies was presumed extinct in the wild between 1969 and 1992, while a small breeding population survived in zoos around the world. In 1992, it was reestablished in the wild by the conservation efforts of numerous zoos.[136] Today, a small wild breeding population exists in Mongolia.[137][138] There are additional animals still maintained at zoos throughout the world.

    Their status as a truly wild horse was called into question when domestic horses of the 5,000-year-old Botai culture of Central Asia were found to be more closely related to Przewalski’s horses than to E. f. caballus. The study raised the possibility that modern Przewalski’s horses could be the feral descendants of the domestic Botai horses. The study concluded that the Botai animals appear to have been an independent domestication attempt and apparently unsuccessful in terms of genetic markers carrying through to modern domesticated equines. However, the question of whether all Przewalski’s horses descend from this population is also unresolved, as only one of seven modern Przewalski’s horses in the study shared this ancestry. It may also be that both the Botai horses and the modern Przewalski’s horses descend separately from the same ancient wild Przewalski’s horse population.[139][140][141]

    The tarpan or European wild horse (Equus ferus ferus) was found in Europe and much of Asia. It survived into the historical era, but became extinct in 1909, when the last captive died in a Russian zoo.[142] Thus, the genetic line was lost. Attempts have been made to recreate the tarpan,[142][143][144] which resulted in horses with outward physical similarities, but nonetheless descended from domesticated ancestors and not true wild horses.

    Periodically, populations of horses in isolated areas are speculated to be relict populations of wild horses, but generally have been proven to be feral or domestic. For example, the Riwoche horse of Tibet was proposed as such,[138] but testing did not reveal genetic differences from domesticated horses.[145] Similarly, the Sorraia of Portugal was proposed as a direct descendant of the Tarpan on the basis of shared characteristics,[146][147] but genetic studies have shown that the Sorraia is more closely related to other horse breeds, and that the outward similarity is an unreliable measure of relatedness.[146][148]

    Other modern equids

    Main article: Equus (genus)

    Besides the horse, there are six other species of genus Equus in the Equidae family. These are the ass or donkeyEquus asinus; the mountain zebraEquus zebraplains zebraEquus quaggaGrévy’s zebraEquus grevyi; the kiangEquus kiang; and the onagerEquus hemionus.[149]

    Horses can crossbreed with other members of their genus. The most common hybrid is the mule, a cross between a “jack” (male donkey) and a mare. A related hybrid, a hinny, is a cross between a stallion and a “jenny” (female donkey).[150] Other hybrids include the zorse, a cross between a zebra and a horse.[151] With rare exceptions, most hybrids are sterile and cannot reproduce.[152]

    Domestication and history

    Main articles: History of horse domestication theories and Domestication of the horse

    Bhimbetka rock painting showing a man riding on a horse, India

    Domestication of the horse most likely took place in central Asia prior to 3500 BCE. Two major sources of information are used to determine where and when the horse was first domesticated and how the domesticated horse spread around the world. The first source is based on palaeological and archaeological discoveries; the second source is a comparison of DNA obtained from modern horses to that from bones and teeth of ancient horse remains.

    The earliest archaeological evidence for attempted domestication of the horse comes from sites in Ukraine and Kazakhstan, dating to approximately 4000–3500 BCE.[153][154][155] However the horses domesticated at the Botai culture in Kazakhstan were Przewalski’s horses and not the ancestors of modern horses.[156][157]

    By 3000 BCE, the horse was completely domesticated and by 2000 BCE there was a sharp increase in the number of horse bones found in human settlements in northwestern Europe, indicating the spread of domesticated horses throughout the continent.[158] The most recent, but most irrefutable evidence of domestication comes from sites where horse remains were interred with chariots in graves of the Indo-European Sintashta and Petrovka cultures c. 2100 BCE.[159]

    A 2021 genetic study suggested that most modern domestic horses descend from the lower Volga-Don regionAncient horse genomes indicate that these populations influenced almost all local populations as they expanded rapidly throughout Eurasia, beginning about 4,200 years ago. It also shows that certain adaptations were strongly selected due to riding, and that equestrian material culture, including Sintashta spoke-wheeled chariots spread with the horse itself.[160][157]

    Domestication is also studied by using the genetic material of present-day horses and comparing it with the genetic material present in the bones and teeth of horse remains found in archaeological and palaeological excavations. The variation in the genetic material shows that very few wild stallions contributed to the domestic horse,[161][162] while many mares were part of early domesticated herds.[148][163][164] This is reflected in the difference in genetic variation between the DNA that is passed on along the paternal, or sire line (Y-chromosome) versus that passed on along the maternal, or dam line (mitochondrial DNA). There are very low levels of Y-chromosome variability,[161][162] but a great deal of genetic variation in mitochondrial DNA.[148][163][164] There is also regional variation in mitochondrial DNA due to the inclusion of wild mares in domestic herds.[148][163][164][165] Another characteristic of domestication is an increase in coat color variation.[166] In horses, this increased dramatically between 5000 and 3000 BCE.[167]

    Before the availability of DNA techniques to resolve the questions related to the domestication of the horse, various hypotheses were proposed. One classification was based on body types and conformation, suggesting the presence of four basic prototypes that had adapted to their environment prior to domestication.[111] Another hypothesis held that the four prototypes originated from a single wild species and that all different body types were entirely a result of selective breeding after domestication.[168] However, the lack of a detectable substructure in the horse has resulted in a rejection of both hypotheses.

    Feral populations

    Main article: Feral horse

    Feral horses are born and live in the wild, but are descended from domesticated animals.[135] Many populations of feral horses exist throughout the world.[169][170] Studies of feral herds have provided useful insights into the behavior of prehistoric horses,[171] as well as greater understanding of the instincts and behaviors that drive horses that live in domesticated conditions.[172]

    There are also semi-feral horses in many parts of the world, such as Dartmoor and the New Forest in the UK, where the animals are all privately owned but live for significant amounts of time in “wild” conditions on undeveloped, often public, lands. Owners of such animals often pay a fee for grazing rights.[173][174]

    Breeds

    Main articles: Horse breedList of horse breeds, and Horse breeding

    The concept of purebred bloodstock and a controlled, written breed registry has come to be particularly significant and important in modern times. Sometimes purebred horses are incorrectly or inaccurately called “thoroughbreds”. Thoroughbred is a specific breed of horse, while a “purebred” is a horse (or any other animal) with a defined pedigree recognized by a breed registry.[175] Horse breeds are groups of horses with distinctive characteristics that are transmitted consistently to their offspring, such as conformation, color, performance ability, or disposition. These inherited traits result from a combination of natural crosses and artificial selection methods. Horses have been selectively bred since their domestication. An early example of people who practiced selective horse breeding were the Bedouin, who had a reputation for careful practices, keeping extensive pedigrees of their Arabian horses and placing great value upon pure bloodlines.[176] These pedigrees were originally transmitted via an oral tradition.[177]

    Breeds developed due to a need for “form to function”, the necessity to develop certain characteristics in order to perform a particular type of work.[178] Thus, a powerful but refined breed such as the Andalusian developed as riding horses with an aptitude for dressage.[178] Heavy draft horses were developed out of a need to perform demanding farm work and pull heavy wagons.[179] Other horse breeds had been developed specifically for light agricultural work, carriage and road work, various sport disciplines, or simply as pets.[180] Some breeds developed through centuries of crossing other breeds, while others descended from a single foundation sire, or other limited or restricted foundation bloodstock. One of the earliest formal registries was General Stud Book for Thoroughbreds, which began in 1791 and traced back to the foundation bloodstock for the breed.[181] There are more than 300 horse breeds in the world today.[182]

    Interaction with humans

    Finnhorse pulling a heavy wagon.

    Worldwide, horses play a role within human cultures and have done so for millennia. Horses are used for leisure activities, sports, and working purposes. The Food and Agriculture Organization (FAO) estimates that in 2008, there were almost 59,000,000 horses in the world, with around 33,500,000 in the Americas, 13,800,000 in Asia and 6,300,000 in Europe and smaller portions in Africa and Oceania. There are estimated to be 9,500,000 horses in the United States alone.[183] The American Horse Council estimates that horse-related activities have a direct impact on the economy of the United States of over $39 billion, and when indirect spending is considered, the impact is over $102 billion.[184] In a 2004 “poll” conducted by Animal Planet, more than 50,000 viewers from 73 countries voted for the horse as the world’s 4th favorite animal.[185]

    Communication between human and horse is paramount in any equestrian activity;[186] to aid this process horses are usually ridden with a saddle on their backs to assist the rider with balance and positioning, and a bridle or related headgear to assist the rider in maintaining control.[187] Sometimes horses are ridden without a saddle,[188] and occasionally, horses are trained to perform without a bridle or other headgear.[189] Many horses are also driven, which requires a harness, bridle, and some type of vehicle.[190]

    Sport

    A chestnut (reddish-brown) horse being ridden by a rider in a black coat and top hat. They are stopped in a riding arena with the rider tipping his hat.
    A horse and rider in dressage competition at the Olympics

    Main articles: EquestrianismHorse racingHorse training, and Horse tack

    Historically, equestrians honed their skills through games and races. Equestrian sports provided entertainment for crowds and honed the excellent horsemanship that was needed in battle. Many sports, such as dressageeventing, and show jumping, have origins in military training, which were focused on control and balance of both horse and rider. Other sports, such as rodeo, developed from practical skills such as those needed on working ranches and stations. Sport hunting from horseback evolved from earlier practical hunting techniques.[186] Horse racing of all types evolved from impromptu competitions between riders or drivers. All forms of competition, requiring demanding and specialized skills from both horse and rider, resulted in the systematic development of specialized breeds and equipment for each sport. The popularity of equestrian sports through the centuries has resulted in the preservation of skills that would otherwise have disappeared after horses stopped being used in combat.[186]

    Horses are trained to be ridden or driven in a variety of sporting competitions. Examples include show jumpingdressage, three-day eventingcompetitive drivingendurance ridinggymkhanarodeos, and fox hunting.[191] Horse shows, which have their origins in medieval European fairs, are held around the world. They host a huge range of classes, covering all of the mounted and harness disciplines, as well as “In-hand” classes where the horses are led, rather than ridden, to be evaluated on their conformation. The method of judging varies with the discipline, but winning usually depends on style and ability of both horse and rider.[192] Sports such as polo do not judge the horse itself, but rather use the horse as a partner for human competitors as a necessary part of the game. Although the horse requires specialized training to participate, the details of its performance are not judged, only the result of the rider’s actions—be it getting a ball through a goal or some other task.[193] Examples of these sports of partnership between human and horse include jousting, in which the main goal is for one rider to unseat the other,[194] and buzkashi, a team game played throughout Central Asia, the aim being to capture a goat carcass while on horseback.[193]

    Horse racing is an equestrian sport and major international industry, watched in almost every nation of the world. There are three types: “flat” racing; steeplechasing, i.e. racing over jumps; and harness racing, where horses trot or pace while pulling a driver in a small, light cart known as a sulky.[195] A major part of horse racing’s economic importance lies in the gambling associated with it.[196]

    Work

    Tired-looking bay horse hitched to a rustic cart

    Horse pulling a cart

    A mounted man in a blue uniform on a dark brown horse

    A mounted police officer in Poland

    There are certain jobs that horses do very well, and no technology has yet developed to fully replace them. For example, mounted police horses are still effective for certain types of patrol duties and crowd control.[197] Cattle ranches still require riders on horseback to round up cattle that are scattered across remote, rugged terrain.[198] Search and rescue organizations in some countries depend upon mounted teams to locate people, particularly hikers and children, and to provide disaster relief assistance.[199] Horses can also be used in areas where it is necessary to avoid vehicular disruption to delicate soil, such as nature reserves. They may also be the only form of transport allowed in wilderness areas. Horses are quieter than motorized vehicles. Law enforcement officers such as park rangers or game wardens may use horses for patrols, and horses or mules may also be used for clearing trails or other work in areas of rough terrain where vehicles are less effective.[200]

    Although machinery has replaced horses in many parts of the world, an estimated 100 million horses, donkeys and mules are still used for agriculture and transportation in less developed areas. This number includes around 27 million working animals in Africa alone.[201] Some land management practices such as cultivating and logging can be efficiently performed with horses. In agriculture, less fossil fuel is used and increased environmental conservation occurs over time with the use of draft animals such as horses.[202][203] Logging with horses can result in reduced damage to soil structure and less damage to trees due to more selective logging.[204]

    Warfare

    Main article: Horses in warfare

    Black-and-white photo of mounted soldiers with middle eastern headwraps, carrying rifles, walking down a road away from the camera
    Ottoman cavalry, 1917

    Horses have been used in warfare for most of recorded history. The first archaeological evidence of horses used in warfare dates to between 4000 and 3000 BCE,[205] and the use of horses in warfare was widespread by the end of the Bronze Age.[206][207] Although mechanization has largely replaced the horse as a weapon of war, horses are still seen today in limited military uses, mostly for ceremonial purposes, or for reconnaissance and transport activities in areas of rough terrain where motorized vehicles are ineffective. Horses have been used in the 21st century by the Janjaweed militias in the War in Darfur.[208]

    Entertainment and culture

    The horse-headed deity in HinduismHayagriva

    See also: Horse symbolismHorses in art, and Horse worship

    Modern horses are often used to reenact many of their historical work purposes. Horses are used, complete with equipment that is authentic or a meticulously recreated replica, in various live action historical reenactments of specific periods of history, especially recreations of famous battles.[209] Horses are also used to preserve cultural traditions and for ceremonial purposes. Countries such as the United Kingdom still use horse-drawn carriages to convey royalty and other VIPs to and from certain culturally significant events.[210] Public exhibitions are another example, such as the Budweiser Clydesdales, seen in parades and other public settings, a team of draft horses that pull a beer wagon similar to that used before the invention of the modern motorized truck.[211]

    Horses are frequently used in television, films and literature. They are sometimes featured as a major character in films about particular animals, but also used as visual elements that assure the accuracy of historical stories.[212] Both live horses and iconic images of horses are used in advertising to promote a variety of products.[213] The horse frequently appears in coats of arms in heraldry, in a variety of poses and equipment.[214] The mythologies of many cultures, including Greco-RomanHinduIslamic, and Germanic, include references to both normal horses and those with wings or additional limbs, and multiple myths also call upon the horse to draw the chariots of the Moon and Sun.[215] The horse also appears in the 12-year cycle of animals in the Chinese zodiac related to the Chinese calendar.[216]

    Horses serve as the inspiration for many modern automobile names and logos, including the Ford PintoFord BroncoFord MustangHyundai EquusHyundai PonyMitsubishi StarionSubaru BrumbyMitsubishi Colt/Dodge ColtPinzgauerSteyr-Puch HaflingerPegasoPorscheRolls-Royce CamargueFerrariCarlssonKamazCorre La LicorneIran KhodroEicher, and Baojun.[217][218][219] Indian TVS Motor Company also uses a horse on their motorcycles & scooters.

    Therapeutic use

    See also: Equine-assisted therapy and Therapeutic horseback riding

    People of all ages with physical and mental disabilities obtain beneficial results from an association with horses. Therapeutic riding is used to mentally and physically stimulate disabled persons and help them improve their lives through improved balance and coordination, increased self-confidence, and a greater feeling of freedom and independence.[220] The benefits of equestrian activity for people with disabilities has also been recognized with the addition of equestrian events to the Paralympic Games and recognition of para-equestrian events by the International Federation for Equestrian Sports (FEI).[221] Hippotherapy and therapeutic horseback riding are names for different physical, occupational, and speech therapy treatment strategies that use equine movement. In hippotherapy, a therapist uses the horse’s movement to improve their patient’s cognitive, coordination, balance, and fine motor skills, whereas therapeutic horseback riding uses specific riding skills.[222]

    Horses also provide psychological benefits to people whether they actually ride or not. “Equine-assisted” or “equine-facilitated” therapy is a form of experiential psychotherapy that uses horses as companion animals to assist people with mental illness, including anxiety disorders, psychotic disorders, mood disorders, behavioral difficulties, and those who are going through major life changes.[223] There are also experimental programs using horses in prison settings. Exposure to horses appears to improve the behavior of inmates and help reduce recidivism when they leave.[224]

    Products

    Horses are raw material for many products made by humans throughout history, including byproducts from the slaughter of horses as well as materials collected from living horses.

    Products collected from living horses include mare’s milk, used by people with large horse herds, such as the Mongols, who let it ferment to produce kumis.[225] Horse blood was once used as food by the Mongols and other nomadic tribes, who found it a convenient source of nutrition when traveling. Drinking their own horses’ blood allowed the Mongols to ride for extended periods of time without stopping to eat.[225] The drug Premarin is a mixture of estrogens extracted from the urine of pregnant mares (pregnant mares’ urine), and was previously a widely used drug for hormone replacement therapy.[226] The tail hair of horses can be used for making bows for string instruments such as the violinviolacello, and double bass.[227]

    Horse meat has been used as food for humans and carnivorous animals throughout the ages. Approximately 5 million horses are slaughtered each year for meat worldwide.[228] It is eaten in many parts of the world, though consumption is taboo in some cultures,[229] and a subject of political controversy in others.[230] Horsehide leather has been used for boots, gloves, jackets,[231] baseballs,[232] and baseball gloves. Horse hooves can also be used to produce animal glue.[233] Horse bones can be used to make implements.[234] Specifically, in Italian cuisine, the horse tibia is sharpened into a probe called a spinto, which is used to test the readiness of a (pig) ham as it cures.[235] In Asia, the saba is a horsehide vessel used in the production of kumis.[236]

    Care

    Main article: Horse care

    See also: Equine nutritionHorse groomingVeterinary medicine, and Farrier

    A young man in US military clothing examines the teeth of a bay (dark brown) horse, while another person in military work clothing, partially obscured, holds the horse. Several other people are partially visible in the background.
    Checking teeth and other physical examinations are an important part of horse care.

    Horses are grazing animals, and their major source of nutrients is good-quality forage from hay or pasture.[237] They can consume approximately 2% to 2.5% of their body weight in dry feed each day. Therefore, a 450-kilogram (990 lb) adult horse could eat up to 11 kilograms (24 lb) of food.[238] Sometimes, concentrated feed such as grain is fed in addition to pasture or hay, especially when the animal is very active.[239] When grain is fed, equine nutritionists recommend that 50% or more of the animal’s diet by weight should still be forage.[240]

    Horses require a plentiful supply of clean water, a minimum of 38 to 45 litres (10 to 12 US gal) per day.[241] Although horses are adapted to live outside, they require shelter from the wind and precipitation, which can range from a simple shed or shelter to an elaborate stable.[242]

    Horses require routine hoof care from a farrier, as well as vaccinations to protect against various diseases, and dental examinations from a veterinarian or a specialized equine dentist.[243] If horses are kept inside in a barn, they require regular daily exercise for their physical health and mental well-being.[244] When turned outside, they require well-maintained, sturdy fences to be safely contained.[245] Regular grooming is also helpful to help the horse maintain good health of the hair coat and underlying skin.[246]

    Climate change

    This section is an excerpt from Effects of climate change on livestock § Equines.[edit]

    Diagram of heat regulation in horses.[247]

    As of 2019, there are around 17 million horses in the world. Healthy body temperature for adult horses is in the range between 37.5 and 38.5 °C (99.5 and 101.3 °F), which they can maintain while ambient temperatures are between 5 and 25 °C (41 and 77 °F). However, strenuous exercise increases core body temperature by 1 °C (1.8 °F)/minute, as 80% of the energy used by equine muscles is released as heat. Along with bovines and primates, equines are the only animal group which use sweating as their primary method of thermoregulation: in fact, it can account for up to 70% of their heat loss, and horses sweat three times more than humans while undergoing comparably strenuous physical activity. Unlike humans, this sweat is created not by eccrine glands but by apocrine glands.[248] In hot conditions, horses during three hours of moderate-intensity exercise can lose 30 to 35 L of water and 100g of sodium, 198 g of choloride and 45 g of potassium.[248] In another difference from humans, their sweat is hypertonic, and contains a protein called latherin,[249] which enables it to spread across their body easier, and to foam, rather than to drip off. These adaptations are partly to compensate for their lower body surface-to-mass ratio, which makes it more difficult for horses to passively radiate heat. Yet, prolonged exposure to very hot and/or humid conditions will lead to consequences such as anhidrosisheat stroke, or brain damage, potentially culminating in death if not addressed with measures like cold water applications. Additionally, around 10% of incidents associated with horse transport have been attributed to heat stress. These issues are expected to worsen in the future.[247]African horse sickness (AHS) is a viral illness with a mortality close to 90% in horses, and 50% in mules. A midge, Culicoides imicola, is the primary vector of AHS, and its spread is expected to benefit from climate change.[250] The spillover of Hendra virus from its flying fox hosts to horses is also likely to increase, as future warming would expand the hosts’ geographic range. It has been estimated that under the “moderate” and high climate change scenariosRCP4.5 and RCP8.5, the number of threatened horses would increase by 110,000 and 165,000, respectively, or by 175 and 260%.[251]