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.

The New Lassie is an American children and family oriented drama series which aired in first-run syndication from September 8, 1989 to February 15, 1992. The series stars Will Estes as Will McCullough, Lassie's new master. Real life husband and wife Christopher and Dee Wallace-Stone co-starred as Will's parents.

The New Lassie is essentially a sequel to the 1954 series, and was the latest in the line of works featuring the Lassie character, which debuted in the 1943 film Lassie Come Home, followed by several more movies and the aforementioned television series, which ran from 1954 to 1973.

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.

Lassie is a Canadian television series which aired from 1997 to 1999 on YTV in Canada and Sunday nights on the Animal Planet network in the United States, as a modified remake of the original Lassie series about a boy and his faithful dog. As with previous Lassie TV versions and several movies dating back to the original Lassie Come Home movie of 1943, the star was Lassie, a trained Rough Collie.

Not to be confused with a previous, syndicated follow-up series entitled The New Lassie which aired 1989–1991, this Canadian-produced Lassie series starred Corey Sevier as 13-year-old Timmy Cabot in the fictional town of Hudson Falls, Vermont. The show was filmed in Quebec by Cinar Inc.. In this series' story line, Timmy and his recently widowed mother, Dr. Karen Cabot, move to Hudson Falls, where Karen takes over a veterinary practice.

In the first season, Lassie was played by "Howard", an eighth generation collie descended from "Pal", the dog in the original 1943 movie Lassie Come Home. As with all previous Lassie movies and television series beginning with Pal, Howard was owned and trained by Weatherwax Trained Dogs, founded by brothers Frank and Rudd Weatherwax. Midway through production, Cinar replaced Howard with a non-Pal descended dog. Following Lassie fan protests, "Hey Hey", son of Howard and a ninth-generation direct descendent of Pal, was brought in to assume the role of Lassie for the final thirteen episodes of the show.