Dr. Sigmund Walters

Beth Colman

Fred Mason

John Whipple

Nurse Strand

Dorothy Colman

Paula Dupree, the Ape Woman

Curly

Gruen

Roustabout (uncredited)

Fred Mason (in long shots) (archive footage / uncredited)

End Narrator (voice)(uncredited)

Dock Spectator (uncredited)

Cheela the Gorilla (uncredited)

Curley (uncredited)

Beth's Murdered Neighbor (uncredited)

Trapeze Artist (uncredited)

Waiter (uncredited)

Coroner (uncredited)

Small Boy (uncredited)

Sheriff (uncredited)

Al (uncredited)

Dock Ticket Office Clerk

Ship's Captain (archive footage)

Cop (uncredited)

Handler (uncredited)

Dock Worker (uncredited)

Jake - Handler (uncredited)

Man on Dock (uncredited)

Attendant (uncredited)

Roustabout (uncredited)

Ringmaster (uncredited)

Tony - Handler (uncredited)

Veterinarian (uncredited)

Music Director

Set Decoration

Set Decoration

Director

Screenplay

Screenplay

Original Story

Original Story

Associate Producer

Director of Photography

Editor

Art Direction

Art Direction

Makeup Artist

Assistant Director

Sound Director

Sound

Stunts

Music

Music

Music

Music

Music

Music

Music

Costume Design