animal (Noun) — A living organism characterized by voluntary movement.
animal (Noun) — Someone who treats others inhumanely, or is regarded as wildly violent or uncivilized.
animal (Noun) — Any non-human animal, esp. a land-living mammal.
animal (Noun) — A particular kind of person or thing. ex. "he's a strange animal"
animal (Adjective) — Marked by the appetites and passions of the body. ex. "animal instincts"