What Your Cat's Tail Can Tell You EVA II: the vibrator that broke my heart Review What it means if you cat's tail shakes like this Why Do Cats Vibrate Their Tail? This Is What They Might Be Signalling With It We Love Catz A cat's tail is a powerful form of communication that reveals its emotions and intentions. When the tail is erect and twitching, the cat is usually excited or happy, while a straight up Why Do Cats Shake or Vibrate Their Tails? Vet Verified Reasons Explained Catster