When livestock falls prey to a wild dog, local farmhands mistakenly accuse a mother cougar and her cubs of hunting their heard. It's up to Lassie and her owner, Forest Ranger Corey Stuart, to identify the real culprit and keep the young cougar family out harm's way.
| Actor | Role |
|---|---|
 Robert BrayNot listed | Not listed |
| LLes Brown Jr.Not listed | Not listed |
 Burt DouglasNot listed | Not listed |
 Stuart RandallNot listed | Not listed |
 LassieLassie the Dog | Lassie the Dog |