The Animals are Missing
S1E1
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Lassie's Rescue Rangers is an animated TV show produced by Filmation and featuring Lassie, running from 1973 to 1975. The hour-long pilot, Lassie and the Spirit of Thunder Mountain, was part of The ABC Saturday Superstar Movie. In 1977, the show entered syndication as part of an anthology series entitled The Groovie Goolies and Friends.
Network
ABC