A man riding a bucking bronco on the open range in Bonham, Texas, USA. The word is used in the United States and Canada to refer to an untrained horse and comes from the Spanish word bronco, meaning "rough", which in Mexican usage also describes a horse. It was then borrowed and adapted in American cowboy lingo.
Modern rodeos include bronc riding as an event. In this sport, riders attempt to stay on a bronco for 8 seconds while holding on with only one hand.Photo credit: Erwin Smith