Understanding Your Cat's Vibrating Tail Behavior 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 Why does my cat shake its tail like this? : r cats Why Do Cats Shake or Vibrate Their Tails? Vet Verified Reasons Explained Catster How to Read Your Cat's Tail Language Feline Anatomy, Behavior, Hunting Britannica