We have an almost pure-black void that screams bloody murder at everything--pick her up, screaming; walk in the room, screaming; give her food, screaming--but c

We have an almost pure-black void that screams bloody murder at everything--pick her up, screaming; walk in the room, screaming; give her food, screaming--but cuddles more aggressively than any cat I've ever heard of and purrs nonstop (when she isn't screaming). She hisses as a primary communications mechanism. I hear that cat hiss more in a day than every hiss from every other cat I've ever had combined. She also panic poops when the other cat gets within 5 feet. She is pure, hate-filled joy.