Writing Credits (in alphabetical order)
| Joel Andrews | ... | (story) |
| Eric Knight | ... | (character) |
Cast (in credits order)
| Jan Clayton | ... | Ellen Miller | |
| Tommy Rettig | ... | Jeff Miller | |
| George Cleveland | ... | George 'Gramps' Miller | |
| Joey D. Vieira | ... | Porky Brockway (as Donald Keeler) | |
| Kathryn Sheldon | ... | Clara (as Kathryn Shelden) | |
| Almira Sessions | ... | Louise | |
| Robert Bice | ... | Seal's Owner (as Bob Bice) | |
| Rest of cast listed alphabetically: | |||
| Lassie the Dog | ... | Lassie | |
Additional Crew
| Ivan A. Peterson | ... | veterinarian |
