 |
Mel Blanc as Daffy Duck / Speedy Gonzales (voice) |
 |
Pedro Gonzalez Gonzalez as Dr. Perez (voice) |
| Directing | Robert McKimson | Director |
| Editing | Lee Gunther | Editor |
| Writing | Michael O'Connor | Story |
| Sound | Walter Greene | Original Music Composer |
| Production | David H. DePatie | Producer |
| Production | Friz Freleng | Producer |
