what does it mean when my cats tail and back muscles quiver like this? What is she trying to tell me? Vibrating tail??? : r CATHELP Cat tail language Petplan Cat Tail Vibrating: Understanding Your Feline Friend's Movements What Does It Mean When Cats Vibrate Their Tails TikTok 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