The king of the jungle, after a well spent day terrorising the rest of the animals, is petrified by a mouse.
Unfortunately the movie Slap Happy Lion is not yet available on HBO Max.
| Directing | Tex Avery | Director |
| Visual Effects | Ray Abrams | Animation |
| Visual Effects | Robert Bentley | Animation |
| Visual Effects | Walt Clinton | Animation |
| Sound | Scott Bradley | Music |
| Production | Fred Quimby | Producer |
| Writing | Heck Allen | Story |
