Penrod Schofield's mischievous dog, Duke, is falsely accused of biting Penrod's spoiled friend, Rodney.
| Actor | Role |
|---|---|
 Billy MauchPenrod | Penrod |
| RRobert J. MauchDanny | Danny |
 Frank CravenMr. Schofield | Mr. Schofield |
 Spring ByingtonMrs. Schofield | Mrs. Schofield |
 Charles HaltonMr. Bitts | Mr. Bitts |
 Claudia ColemanMrs. Bitts | Mrs. Bitts |
| JJackie MorrowRodney Bitts | Rodney Bitts |
 Philip HurlicVermin | Vermin |
 Benny BartlettChuck | Chuck |
| BBernice PilotDelia | Delia |
| JJohnnie Pirrone Jr.Sam | Sam |
| BBilly LechnerDonald | Donald |
 Charley FoyKraemer | Kraemer |
 Charles JordanShorty | Shorty |
 Jay AdlerJohnson | Johnson |
 Max WagnerBlackie | Blackie |
 Eddie CollinsCaptain | Captain |
 Fred LawrenceClark | Clark |
 Robert HomansChief Flynn | Chief Flynn |