Why Does My CAT'S TAIL WAG When I PET THEM? Tail Wagging MEANINGS! What is she trying to tell me? Vibrating tail??? Why Do Cats Shake Or Vibrate Their Tails? What Does it Mean? Your cat's tail is literally talking to you are you listening? That little flick? Warning. That slow swish? Full hunter mode. That tiny shake when you walk in the door? Pure Why Do Cats Vibrate Their Tails? Reading Your Cat's Body Language Kinship