Directed by
| Robert Gordon | ||
Writing Credits (in alphabetical order)
| Herman Cohen | ... | (story & screenplay) |
| Aben Kandel | ... | (story & screenplay) |
Cast (in credits order)
| Michael Gough | ... | Michael Conrad | |
| Jeanne Cooper | ... | Edna Conrad | |
| Rod Lauren | ... | Carl | |
| Virginia Grey | ... | Jenny Brooks | |
| Jerome Cowan | ... | Jerry Stengel | |
| Elisha Cook Jr. | ... | Joe (as Elisha Cook) | |
| Edward Platt | ... | Chief of Detectives Rivers | |
 |
Douglas Henderson | ... | Lt. Mel Duggan |
| Marianna Hill | ... | Audrey | |
| Byron Morrow | ... | Coroner | |
|
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Oren Curtis | ... | Radu |
| Jerry Douglas | ... | Perkins - Lab Technician | |
| Joseph Mell | ... | Frank Cramer | |
|
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Eric Stone | ... | Groom |
| Eilene Janssen | ... | Bride | |
| Warrene Ott | ... | Mary Hogan | |
| Rest of cast listed alphabetically: | |||
| Zamba | ... | Lion | |
| George Barrows | ... | Victor - the Gorilla (uncredited) | |
| Claudia Brack | ... | Carl's Mother (uncredited) | |
| Herman Cohen | ... | (uncredited) | |
|
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Daniel Kurlick | ... | Carl - as a Child (uncredited) |
| Dani Lynn | ... | Art Student (uncredited) | |
|
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Susan Slavin | ... | Art Student (uncredited) |
| Michael St. Angel | ... | Officer Donovan (uncredited) | |
Produced by
| Herman Cohen | ... | producer |
Music by
| Paul Dunlap | ||
Cinematography by
| Floyd Crosby | ... | director of photography |
Editing by
| Michael Luciano | ||
Art Direction by
| William Glasgow | ||
Makeup Department
| Phillip Scheer | ... | makeup artist (as Philip Scheer) |
| Peggy Shannon | ... | hair stylist |
Production Management
| Edward Morey Jr. | ... | production manager |
Second Unit Director or Assistant Director
| William McGarry | ... | assistant director |
| Arthur M. Broidy | ... | assistant director (uncredited) |
Art Department
| Arthur Friedrich | ... | property master |
| James West | ... | construction supervisor |
Sound Department
| Charles Brown | ... | music editor |
| John L. Bury | ... | sound (as John Bury Jr.) |
| Harold E. McGhan | ... | sound effects editor |
| Richard Overton | ... | boom operator (uncredited) |
| Burdick S. Trask | ... | sound recordist (uncredited) |
Special Effects by
| Pat Dinga | ... | special effects |
Camera and Electrical Department
| Al Baerthlin | ... | first assistant camera (uncredited) |
| Charles Hannawalt | ... | grip (uncredited) |
| Eddie Jones | ... | still photographer (uncredited) |
| David McEwen | ... | second assistant camera (uncredited) |
| Harry Sundby | ... | gaffer (uncredited) |
| Harry L. Underwood | ... | camera operator (uncredited) |
Costume and Wardrobe Department
| Jack Masters | ... | wardrobe |
| Norah Sharpe | ... | wardrobe (uncredited) |
Music Department
| Charles Brown | ... | music editor |
| Paul Dunlap | ... | conductor |
Script and Continuity Department
| Mary Gibsone | ... | script supervisor |
Additional Crew
| Bowie Adams | ... | animal trainer |
| Rita Calmanson | ... | production secretary |
| Ralph Helfer | ... | animal supervisor: Africa U.S.A. [us] |
| Frank Lamping | ... | animal trainer (uncredited) |
