Jerry's eccentric uncle, Pecos, a Texan mouse, comes to spend the night with him before his musical performance on television the next day. He decides to rehearse with his guitar for the performance but each time he plays, one of his guitar strings snaps off. Fortunately, he is able to replace them by plucking off one of Tom's whiskers each time. Tom is rather reluctant about this and tries to hide to protect his whiskers from Uncle Pecos.
Unfortunately the movie Pecos Pest is not yet available on HBO Max.
| Production | Fred Quimby | Producer |
| Visual Effects | Ray Patterson | Animation |
| Directing | William Hanna | Director |
| Visual Effects | Irven Spence | Animation |
| Visual Effects | Ed Barge | Animation |
| Visual Effects | Kenneth Muse | Animation |
| Art | Robert Gentle | Background Designer |
| Directing | Joseph Barbera | Director |
| Sound | Scott Bradley | Music Director |
