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