Wild animals never kill for sport. Man is the only one to whom the torture and death of his fellow-creatures is amusing in itself.
~ James Anthony Froude (born: 1818-04-23 died: 1894-10-20 at age: 76) 1886.

This is not quite true. Orcas will sometimes play with a seal tossing it about like a football. Wolves will sometimes kill more than they can consume. Cats will sometimes play with a mouse letting it escape then catching it again.