Updated: February 21, 2025

Lassie is an American television series that follows the adventures of a female Rough Collie dog named Lassie and her companions, both human and animal. The show was the creation of producer Robert Maxwell and animal trainer Rudd Weatherwax and was televised from September 12, 1954, to March 25, 1973, making it the eighth longest-running scripted American primetime television series. The show ran for 17 seasons on CBS before entering first-run syndication for its final two seasons. Initially filmed in black and white, the show transitioned to color in 1965.