noun - A female who is assertive and aggressive in bed, but in a passionate rather than dirty or slutty sense.
adj. - When a woman is so good in bed that it's impossible to break up with her, because he knows no pussy will ever compare. A guy would sooner castrate himself than do something that would risk her breaking up with him.
2. Every guy who'd ever been with her was spoiled for all other women because of her femanimal abilities.
Dick: See that cougar over there, I bet she's a monster in the sack whether she's on top, bottom or taking it doggy style.
Harry: Yeah, she probably just got divorced and hasn't had an orgasm in like 10 years. That kind of deprivation can turn even the most unassuming woman into a femanimal.