The American Quarter Horse
The American Quarter Horse is an American breed of horse that excels at short distance sprints. The name came from its outstanding ability to outdistance other horse breeds in races of a quarter mile or less; It is documented that some individuals have been clocked at speeds up to 55 mph (88.5 km/h). As the most popular breed in the U.S today, The American Quarter Horse , has more than 5 million American Quarter Horses registered in the registry of the American Quarter Horse Association. Thus is the largest breed registry in the world.