Lassie - Season 7 - Eps 18: The Wild Horse
Timmy observes what he believes is a wild horse which becomes a menace to the local farms but persuades Paul to convince the local farmers to spare the life of the horse which is later learned to be an escaped thoroughbred.
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