Lassie

The Disappearance: Part 2 - S10-E18

Trivia: When you see Timmy and his Father searching for Lassie in an aircraft, look at the plane in the faraway shots. It's same plane used in the 1960 Ivan Tors series "Ripcord." (00:05:35)

Regulus

The Disappearance: Part 5 - S10-E21

Trivia: The season ten episode "The Disappearance" was the last of several "experimental" episodes used to see who would become the dog's new owner (Timmy was growing up). This episode produced the greatest feedback from viewers, thus sealing Lassie's fate in the next season.

Regulus

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