- Jack Woodsscreenplay and
- Anthony Harrisscreenplay
- Dick Clairstory "A Chip Off the Old Blob" (as Richard Clair) and
- Robert Walker Jr.(as Robert Walker)
- Bill Coontz(as William B. Foster)
Rest of cast listed alphabetically
- William Foster(uncredited)
- Judy Graubart(uncredited)
- Sid Haig(uncredited)
- Burgess Meredith(uncredited)
- Conrad Rothmann(uncredited)
- Anthony Harrisproducer
- Jack H. Harrisexecutive producer
- Jesse Coralloassistant director
- Larry Wallinspecial props
- Ken Carlsonsound mixer
- Jim Aupperlespecial effects assistant (uncredited)
- Conrad Rothmannspecial effects (uncredited)
- Dean Cundeycamera operator: animal sequences
- William Fostercamera assistant (as William B. Foster)
- Bill Pecchigrip (as Bill Pecchi Jr.)
- Doug Beswickanimator: animated sequence (uncredited)
- Robert N. Goodmanlocation manager
- Hazel W. Hallscript supervisor (as Hazel Hall)
- Hana Cannonproduction assistant
- Conrad Rothmanndirector: animal sequences
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