Rabbit Behavior Explained: Why They Thump, Flop, and Zoom Small Pet Select U.S. Common Rabbit Postures, Behaviors, and Vocalizations Purring or tooth purringA sound made by lightly and quickly grinding and vibrating the teeth as the whiskers quiver; a sign of contentment. Oinking or honkingA What Does It Mean When Rabbits Thump? PBS Pet Travel I was petting my bunny, just petting and holding his ears gently in my hand while stroking it, and he vibrated around his head area??? : r Rabbits 10 Causes of Rabbit Shaking (and what to do to help them)