Bestiality

Full definition of bestiality

(plural bestialities)

(archaic) A status of lower animal.
(archaic) An animal-like instinct or behaviour.
(archaic) A mark, trait, or emblem of a beast."What's your bestiality?" (What's your mark?)
Sexual activity between a human and another species.
(dated) Bestial in nature, savagery, inhumanity, like (or akin to) an animal: "Man's bestiality to man"
(dated) Any abstract entity similar to a beast.