Quivering, Wagging, Puffed Up: What is Your Cat's Tail Trying to Tell You? 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 Cat tail signs: What your cat's tail tells you Why Is My Cat's Tail Twitching? Is This Normal? Chewy Why Do Cats Vibrate Their Tail? This Is What They Might Be Signalling With It We Love Catz Anyone else's cat do this? She vibrates her tail when she is happy to see me : r blackcats