Spitz

Spitz is one of the main antagonists of Jack London's Call of the Wild. He is a husky and Buck’s archrival and the original leader of Francois’s dog team. He is also the dog that kills Curly, Buck's friend and companion on the arduous boat trip to the North.

Background
Spitz is a fierce animal—a “devil-dog,” one man calls him—who is used to fighting with other dogs and winning. He meets his match in Buck, however, who is as strong as Spitz and possesses more cunning. Spitz is an amoral being who fights for survival with all of his might, disregarding what is right and wrong. Buck eventually beats Spitz in a fight "to the death". Spitz is killed by the pack after his defeat by Buck, and Buck eventually becomes the leader of the team. Buck's fight-to-the-death with Spitz illustrates Buck's ability to survive among even the most primitive elements.

Personality
Spitz is shown to be cruel, manipulative, and pugilistic.

Trivia

 * His name is similar to Spitz from the 2009 film Fantastic Mr. Fox.