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Thoroughbred horse,breed of light horselight horse,
any breed of horse that is used primarily for riding or for light work such as pulling buggies. Light horses have their origin in the Middle East and N Africa.
..... Click the link for more information. more properly known as the English running horse. As its name implies, it was the first pedigreed, or "thoroughbred" horse. It originated in England from crosses between imported Turkish and Arabian horsesArabian horse,
breed of light horse developed in Mesopotamia and N Africa, and probably the first true domesticated breed. Prized since earliest times for its superior beauty, spirit, speed, grace of movement, stamina, and intelligence, the Arabian has served as parental stock
..... Click the link for more information. and existing English lines and has since been exported around the world. As the fastest of all horses—it can achieve a speed of just under 40 mi (64 km) per hr for a distance of a mile (1.6 km)—the Thoroughbred has held undisputed reign as king of horse racing (except for the quarter-mile sprint; see quarter horsequarter horse,
American breed of light horse that originated during the colonial era, partly from Arabian ancestry (see Arabian horse). The name refers to the horse's reputation for speed at the quarter-mile distance.
..... Click the link for more information. ). Its temperament is racy and nervous. Thoroughbreds average over 16 hands (64 in./160 cm) in height, weigh around 1,100 lb (500 kg), and have a leggy appearance. They may be any color but usually have white markings.