From chickens being wine tasters to horses diving off 60ft platforms; humans have always made animals do people things in the name of science or entertainment.
Diving Horse (from a 60ft platform)
A very cruel and incredibly dangerous stunt whereby a girl rider sits on top of a horse and jumps 60ft in to water below. Diving Horses were actually a very popular event in the 1880s. The 'attraction' was set up by William 'Doc' Carver. The horses sometimes dove four times a day, seven days a week. There were allegations of using prods, electrical jolts, and trap doors to get unwilling horses to dive. It lost its popularity after World War II.
Film: Diving Horse