• 
  Victor Brandt

  Dad
• 
  J. Cynthia Brooks

  Marianne (as Cindy Brooks)
• 
  Dean Cameron

  Bo
• 
  Christopher Carroll

  Lt. Pat Wilson
• 
  Stuart Fratkin

  Abe
• 
  Howard French

  Sheriff Bloomenfield
• 
  Tom Henschel

  Harry Miller
• 
  Darrow Igus

  Detective Martin

• 
  Rosalee Mayeux

  Mom (credit only)
• 
  Robert Ridgely

  Oscar the Dog (voice) (as Bob Ridgely)
• 
  Allan Royal

  Lt. Col. Tom Barker
• 
  Anthony Russell

  Mr. Cassidy
• 
  Edgar Small

  Bushman the Gorilla (voice)
• 
  Patrick Wayne

  Lester Kerwick
• 
  Pamela Winslow

  Cindy