Bonzo also "Trills", for lack of a better descriptive word. He carries on full conversations with those "Little Imaginary Men". When he is bored or want us to go cuddle with him he has the MOST PITIFUL YeeeeeeeeeeeeeeeOW! I think he learned that last summer when he got sick. Mommy and Daddy will drop everything and come running if I YeOW like that. He uses it to his advantage now every chance he gets!