Why Do Cat Tails Shake and Quiver? Cats.com Understanding Your Cat's Vibrating Tail Behavior TikTok How to Read Your Cat's Tail Language and Meaning PetMD What Your Cat's Tail Can Tell You Cat Tail Language: What Your Cat's Tail Really Means You asked and we picked one question to answer this week: "Why does my cat shake her tail like a rattlesnake?", We've got the answer below from behavior professional Kenzie Korpela, IAABC SBA, CFVA.