Obligate carnivores are not equipped to digest vegetable matter, and when they do eat it, it is it is usually because they want to make themselves vomit. Another sub- variety of carnivore is the insectivore, which eats predominately insects, and finally there are cannibals-creatures that eat their own species. This last category includes various spiders, scorpions, the praying mantis, and crocodiles, as well as various toads and fish. Mammals such as rabbits, hamsters, chimpanzees, and humans have also been known to resort to cannibalism