AIn the novel, Buck is stolen from his owner, the Judge, & is deliberately starved on a journey of several days by train until he arrives in Seattle. There, freed from his cage by a man in a red sweater, he lunges at the man who teaches him discipline with a club. The scene only comprises a few seconds in the film.The dog playing Buck in the film is also a pure-bred German Shepherd. In the novel, Buck is a mix of a Saint Bernard and a Scotch-Shepherd.In the novel, Buck is taken to Alaska by ship & sold to a couple of French-Canadian gold prospectors, Francois & Perrault who use Buck & a team of dogs to pull their sled into the Klondike region of the Yukon Territory. In the film, Buck is sold directly to John Thorton, who then travels with a partner to the same region. Along the trail, Buck is again stolen (along with the rest of the team). Thorton is later reunited with Buck when Charles, Hal & Mercedes (the inexperienced group that buys Buck) straggle into Thorton's camp.The remainder of the film from this point is generally faithful to the original story.
AYes. The Call of the Wild is a novella (a short book), published in 1903 & written by Jack London, an American author, who often wrote about the wilderness of Northwestern Canada & Alaska. This is probably his most famous work.