Two years ago my husband adopted a deaf white cat. The shelter that found her wandering around had temporarily named her Angel, but it was clear to me within minutes of meeting her that this was a particularly inappropriate apellation. We renamed her Sheba the White Tornado. People often mis-hear the name and think we are referring to her as Shiva (the Hindu god of destruction)--a mistake that's understandable when you've seen her in action.
Sheba's deafness theoretically renders her vulnerable to surprise attack from other animals, but in practice this never happens. Sheba's defensive strategy is to savagely attack any cat, dog, or other small animal she sees. It's effective--no one has ever voluntarily gone a second round with Sheba.
Unfortunately, Sheba has got it in for the big gray cat next door, which is plainly terrified of her. Since we never take Sheba out at night, the gray cat has become more or less nocturnal. But yesterday the two collided in the neighbors' backyard. I separated them immediately, and carried Sheba home, but the gray cat seems to have suffered psychic damage and now won't come out at all.