Lassie is a fictional collie dog character and a stage name for several dog actors. The fictional character was created by Eric Knight in a short story expanded to novel length . Published in 1940, the novel was filmed by MGM in 1943 the show with a talented dog named Pal . Pal then appeared with the stage name in six other MGM feature films through 1951. Pal's owner and trainer Rudd Weatherwax then acquired the name and trademark from MGM and appeared with Pal at rodeos, fairs, and similar events across America in the early 1950s. In 1954, the long running, Emmy winning television series debuted, and, over the next 19 years, a succession of Pal's descendants appeared on the series. The dog character has appeared in radio, television, film, toys, comic books, animated series, juvenile novels, and other media. Pal's descendants continue to play today.