Bucking Bull

A bucking bull is a bull used in rodeo bull riding competition. They are usually a Brahman crossed with another breed, weighing 1,500 pounds or more, selected for their tendency to "leap, plunge and spin" when a human is on its back. In the mid-20th century, breeders began selecting bulls for bad temperament; ones that would buck when ridden. Many of the best bucking bulls trace their lineage to b... (Wikipedia)