S05E16: Beaver, the Bunny

Beaver is cast as a rabbit for a school play and June has his costume all ready, complete with floppy ears and puffy tail. On the night of the play, Beaver needs to be at the school early and gets a ride with Lumpy and Wally in full costume, however, Lumpy's car breaks down and Beaver must walk the few blocks to the school to get there in time.