Why Do Cats Vibrate Their Tails? Reading Your Cat's Body Language Kinship What Your Cat's Tail Can Tell You What Your Cat's Tail Can Tell You What does it mean when a cat's tail quivers or vibrates? A Guide to What Your Cat is Communicating: A cat's tail is far more than just a balance toolit is a sophisticated emotional barometer that broadcasts their internal world. When your feline How to Read Your Cat's Tail Language and Meaning PetMD