Mechanical bull
As a form of entertainment, the mechanical bull often includes a saddle (even though saddles are not used in real bull riding) and often a model of the head of a bull, complete with horns.   One of the earliest uses as a form of entertainment was at  Bertrand Island Amusement Park in New Jersey), where  a mechanical bucking bronco ride was introduced in the 1930s, under the name of "Ride 'Em Cowboy!".