Why does my cat shake its tail like this? : r cats How to Read Your Cat's Tail Language and Meaning PetMD Why Do Cats Vibrate Their Tails? Reading Your Cat's Body Language Kinship Rattlesnake Tail is one of the signs of the *most* excited happy cats. It can be confused with the behavior of spraying, but in a fixed cat, its actually just an extremely excited cat!!!!! #happycat Why Do Cats Vibrate Their Tails? Reading Your Cat's Body Language Kinship Why Do Cats Vibrate Their Tails? Reading Your Cat's Body Language Kinship