Season 12
Episodes
1. Lassie Meets a Challenge
1965-09-12
No overview available.
2. Sudden Fury
1965-09-19
No overview available.
3. Lassie and the Dynamite
1965-09-26
No overview available.
4. Lassie and the Seagull
1965-10-03
No overview available.
5. Charlie Banana
1965-10-10
No overview available.
6. In the Eyes of Lassie
1965-10-17
No overview available.
7. Trouble at Paradise Lake
1965-10-24
No overview available.
8. Little Dog Lost
1965-10-31
No overview available.
9. Lassie's Time of Peril
1965-11-07
A flooded river threatens to sweep away a bridge construction project. Ranger Corey Stuart and Lassie brave the raging waters in a small boat to construct a log chain barrier and control the flow of water and logs.
10. In the Midst of Splendor
1965-11-14
No overview available.
11. Lassie Saves a Life
1965-11-21
No overview available.
12. The Waif
1965-11-28
No overview available.
13. Crisis
1965-12-05
No overview available.
14. Pitfall
1965-12-12
No overview available.
15. Temper the Wind
1965-12-19
No overview available.
16. The Gift of Life
1965-12-26
No overview available.
17. Lassie Catches the Poachers
1966-01-02
No overview available.
18. The Town That Wouldn't Die
1966-01-16
No overview available.
19. Just One Old Cow
1966-01-23
No overview available.
20. The Outcast
1966-01-30
No overview available.
21. Cradle of the Deep
1966-02-06
No overview available.
22. The Homesick Hound
1966-02-13
A bloodhound needs to be relocated, but he dislikes all his new abodes.
23. The Silent Threat
1966-02-20
Corey and another ranger battle a spruce bud worm infestation by spraying but meet resistance from a horse ranch owner. Lassie makes friends with a colt and reveals the true cause of death of one of the horses.
24. The Friendless
1966-02-27
No overview available.
25. Avalanche
1966-03-06
No overview available.
26. Babes in the Woods
1966-03-13
No overview available.
27. Lassie's Rescue Mission
1966-03-20
No overview available.
28. The Doll
1966-03-27
No overview available.
29. The Untamed Land
1966-04-03
No overview available.
30. The Day the Mountain Shook
1966-04-17
No overview available.
31. The Vigil
1966-04-24
No overview available.
32. The Strongest Instinct
1966-05-01
No overview available.