Bimbo's Initiation

Bimbo's Initiation is a 1931 Fleischer Studios Talkartoon animated short film starring Bimbo and featuring an early version of Betty Boop with a dog's ears and nose. It was the final Betty Boop cartoon to be animated by the character's co-creator, Grim Natwick, prior to his departure for Ub Iwerks' studio.