Cat tail language Petplan Why Do Cats Vibrate Their Tail? This Is What They Might Be Signalling With It We Love Catz Why does my cat shake its tail like this? : r cats What does this tail shake say? Your cat's tail is talking are you listening? From flicks of frustration to swishes of overstimulation, tails can reveal so much about how your cat is feeling. #cats #catbehavior #bodylanguage What does it mean when a cat's tail vibrates?