The Thoroughbred horse is a breed known for its speed, agility, and endurance, primarily used in horse racing. Originating in the 17th and 18th centuries in England, these horses are characterized by their slim, athletic build and long legs. They typically stand between 15.2 and 17 hands high and come in various colors, with bay, chestnut, and gray being the most common. Thoroughbreds are not only popular in racing but also excel in other equestrian sports, such as show jumping and dressage. Their strong competitive spirit and trainability make them a favorite among riders and trainers worldwide.