The Master and Margarita
(Мастер и Маргарита)
Behemoth ( in russian "Бегемот" litterally Hippo) is an enormous, demonic black cat who speaks, walks on two legs, and can even transform to human shape for brief periods. He is a member of Woland's entourage.
"But worst of all was the third invader: a black cat of revolting proportions sprawled in a nonchalant attitude on the pouffe, a glass of vodka in a one paw and a fork, on which he had just speared a pickled mushroom, in the other."