Samantha the Cat / The Sheep (voice)
Sebastian / Dr. Quack / Daisy the Cow / Sandy the Chicken (voice)
Heidi / Robert / Barry the Bulldog (voice)
Wynyard the Frog / Trevor the Rat / The Fly (voice)
(voice) (uncredited)
Bletch / Arfur the Worm (voice)
Sid the Elephant / The Cockroach / Louie the Fish (voice)
Heidi the Hippo (uncredited)
Killer man (uncredited)
Bletch (voice) (uncredited)
Audience Member in the Theater (uncredited)