Reining is a competitive equestrian sport that showcases a horse's ability to perform precise maneuvers while being guided by a rider. It originated from the working practices of cattle herding and emphasizes the horse's responsiveness, agility, and control. Competitors are judged on their performance of specific patterns that include spins, stops, and circles, all executed at various speeds. In reining competitions, riders use a Western saddle and bridle, and the horse is typically a breed known for its athleticism, such as the American Quarter Horse. Events are held in arenas, and riders are scored based on their execution of the required maneuvers, with penalties for mistakes or deviations from the pattern.