

Yeehat Indians - The fictional tribe Jack London invented for the story, who are responsible for attacking Thornton's camp and murdering him (and his friends). Spitz - The dog who challenges Buck for the leadership position of the pack, losing a "fight to the death." The man in the red sweater - The man who bought Buck, beats dogs not even worth naming, he's so cruel. Perrault, in particular, knew dogs, recognizing Buck as "one in ten thousand." Buck didn't like them, but respected them as a new kind of men. Perrault, Francois, Curly - French Canadian miners assembling their dog teams to find gold.

John Thornton - The first kind-hearted owner Buck has ever had in the Yukon, leading his team of sled dogs, which he treats humanely, compared to other men. Judge Miller - Buck's first owner who raised him in a big house in the "sun-kissed" Santa Clara Valley, before Buck was abducted to the Yukon Territory to become a sled dog. Buck - The 140 pound Saint Bernard and Scotch Shepherd mix dog, who is the narrator of the story.
