what do they put on bulls to make them buck
Bull riding The bull bucks, rears, kicks, spins, and twists in an effort to throw the rider off. This continues for a number of seconds until the rider bucks off or dismounts after completing the ride. A loud buzzer or whistle announces the completion of an eight-second ride.
Running of the bulls The most famous bull-run – what a capitalized "the Running of the Bulls" most often refers to in English – is the encierro held in Pamplona during the nine-day festival of Sanfermines in honour of Saint Fermin.[2] It has become a major global tourism event, today very different from the traditional, local festival. More traditional summer bull-runs are held in other places such as towns and villages across Spain and Portugal, in some cities in Mexico,[3] and in the Occitan (Camargue) region of southern France. Bull-running was formerly also practiced in rural England, most famously at Stamford until 1837.