Quivering, Wagging, Puffed Up: What is Your Cat's Tail Trying to Tell You? Anyone else's cat do this? She vibrates her tail when she is happy to see me : r blackcats Cat tail language Petplan Why Do Cats Vibrate Their Tail? This Is What They Might Be Signalling With It We Love Catz Why Do Cats Vibrate Their Tail? This Is What They Might Be Signalling With It We Love Catz The Definitive Guide to Cat Behavior and Body Language Tuft & Paw