"The Diet Caper" is the fifteenth episode of Help!... It's the Hair Bear Bunch! It originally aired on CBS on December 18, 1971.
Summary[]
In an effort to complement their daily rations of bear food, the Hair Bears attempt to tunnel their way out of the zoo. However, they end up getting both Peevly and Botch finding out about their escape attempt and giving chase, and they also wind up inside a haunted house.