On screen
Cast
18 credited performers
Bob Newhart
Bernard (voice)
Eva Gabor
Miss Bianca (voice)
Geraldine Page
Madame Medusa (voice)
Joe Flynn
Mr. Snoops (voice)
Jeanette Nolan
Ellie Mae (voice)
Pat Buttram
Luke (voice)
Jim Jordan
Orville (voice)
John McIntire
Rufus (voice)
Michelle Stacy
Penny (voice)
Bernard Fox
The Chairman (voice)
Artwork unavailable
Larry Clemmons
Gramps (voice)
James MacDonald
Evinrude / Brutus / Nero (voice)
George Lindsey
Rabbit (voice)
Artwork unavailable
Bill McMillian
TV Announcer (voice)
Dub Taylor
Digger (voice)
John Fiedler
Owl (voice)
Robie Lester
Miss Bianca (singing voice, uncredited)
Peter Renaday
American Deligate (voice) (uncredited)