Puss N' Booty (1943) ****

Cats eat birds, but Rudolph isn't just a gourmand, but also a hypocrite. After devouring a little bird, he helps his mistress look for him in trash cans, envelopes and under postage stamps. Then, he anxiously awaits the arrival of the pet shop truck bringing the next victim. But the cat gets more than he bargained for and the laws of nature are rewritten - in cartoons, birds can eat cats, too!