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Hal Smith as |
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Mel Blanc as Bub (voice) |
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Bob Holt as Mr. Hoober-Bloob (voice) |
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June Foray as |
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Lennie Weinrib as |
| Production | Dr. Seuss | Producer |
| Writing | Dr. Seuss | Writer |
| Production | David H. DePatie | Executive Producer |
| Directing | Alan Zaslove | Director |
| Sound | Dean Elliott | Music |
| Production | Friz Freleng | Executive Producer |
| Visual Effects | Bob Matz | Animation |
| Visual Effects | Bob Richardson | Animation |
| Visual Effects | Don Williams | Animation |
| Visual Effects | Norm McCabe | Animation |
| Visual Effects | Ruth Kissane | Animation |
| Visual Effects | Warren Batchelder | Animation |
| Visual Effects | Nelson Shin | Animation |
| Visual Effects | Bob Bemiller | Animation |
| Visual Effects | Brenda Banks | Animation |
| Visual Effects | Bob Bransford | Animation |
| Visual Effects | John Freeman | Animation |
| Crew | Gerry Chiniquy | Sequence Supervisor |
| Directing | Dick Ung | Layout |
| Art | Roy Morita | Production Design |
| Art | Rosemary O'Connor | Storyboard Artist |
| Art | Chris Jenkyns | Storyboard Artist |
| Art | Richard H. Thomas | Background Designer |
| Art | Gloria Wood | Background Designer |
| Production | Lee Gunther | Executive In Charge Of Production |
