Understanding the Purring of Cats What it means if you cat's tail shakes like this YouTube The Definitive Guide to Cat Behavior and Body Language Tuft & Paw Cat Tail Language: 10 Secret Messages Your Cat Is Sending You With Their Tail Chewy Why does my cat shake her tail like this? : r cats 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.