A pudgy but tough-guy cat recruits Sylvester as his stooge to catch a mouse for his dinner, under the pretense of training Sylvester to be a champion mouser. Sylvester enters a warehouse and runs into the baby kangaroo, Hippety Hopper, and thinks, as usual, that Hippety is a giant mouse that must be fought.
| Directing | Robert McKimson | Director |
| Sound | Milt Franklyn | Original Music Composer |
| Writing | Tedd Pierce | Story |
| Visual Effects | Warren Batchelder | Animation |
| Editing | Treg Brown | Editor |
| Visual Effects | George Grandpré | Animation |
| Visual Effects | Tom Ray | Animation |
| Visual Effects | Ted Bonnicksen | Animation |