Rodeo (pronounced /ˈroʊdi.oʊ/ or /roʊˈdeɪ.oʊ/) is a sport which arose out of the working practices of cattle herding in Spain, Mexico, and later the United States, Canada, South America and Australia. It was based on the skills required of the working vaqueros and later, cowboys, in what today is the western United States, western Canada, and northern Mexico. Today it is a sporting event that consists of events that involve horses and other livestock, designed to test the skill and speed of the human cowboy and cowgirl athletes who participate. Professional rodeos generally comprises the following events: tie-down roping, team roping, steer wrestling, saddle bronc riding, bareback bronc riding, bull riding and barrel racing. The events are divided into two basic catergories: the rough stock events and the timed events. Depending on sanctioning organization and region, other events such as breakaway roping, goat tying, or pole bending may also be a part of some rodeos.