Barbara Luddy Lady (voice) Peggy Lee Darling / Si / Am / Peg (voice) Bill Thompson Jock / Bull / Policeman at Zoo / Dachsie / Joe (voice) Stan Freberg Beaver (voice) Verna Felton Aunt Sarah (voice) Alan Reed Boris (voice) George Givot Tony (voice) Dal McKennon Toughy / Professor / Pedro (voice)