And now we've devolved, into hunters.
~ Gareth

There's no escape THIS TIME, BASIL!!!
~ Ratigan, after revealing his true nature as a savage rat

Ferals are villains that embrace a savage, animalistic lifestyle or belief system.

Sometimes, a Feral may actually be an Animal, but in order to qualify, they must be of the anthropomorphic kind (such as General Woundwort) in an environment or world where their savage behavior is seen as abnormal rather than the norm.