Lassie - Season 16 - Eps 21: Whitewater Fury
While Bob and Dan are scouting out the rapids for a ""whitewater trail"" for tourists, Lassie finds a baby raccoon that has been poisoned by ""pink snow""--the same material she has already eaten. The only way to get her help--a trip down the worst of the rapids.
About Lassie

Title: Lassie
First Air Date: 1954-09-12
Last Air Date: 1973-03-24
Status: Ended
Rating: 6.1/10 (from 65 votes)
Language: EN
Seasons: 20
Total Episodes: 591
Network: CBS
Genres: Action & Adventure, Drama, Family, Comedy
Production Companies: Unknown
Synopsis
Lassie is the pet of Jeff Miller, an 11-year-old farm boy. The two become best friends and enjoy family adventures in the American countryside, teaching each other about love, nature and commitment.
Cast

Hugh Reilly
Paul Martin

Josh Albee
Mike Bishop

Larry Pennell
Keith Holden

Larry Wilcox
Dale Mitchell