Minor Characters
Spitz
Buck's rival for supremacy on François and Perrault's sled dog team. Spitz is not only an experienced sled dog, who has traveled throughout the Northland, but he is a ruthless and cunning animal who will do anything to preserve his power.
Perrault
Also a French-Canadian mail driver, he is François' sledding partner. Along with François, he educates Buck in becoming a sled dog. Like François, he is portrayed as a just and fair master, whose speech is heavily accented.
Judge Miller
Buck's original owner, he owns the Santa Clara estate in California where Buck grows up and from which Buck is kidnapped. He is associated with the Southland, civilization, and its laws.
Mercedes
Hal's sister and Charles' wife, she is a selfish and materialistic woman disposed towards hysteria.
Charles
Like his wife Mercedes and brother-in-law Hal, he is an incompetent sledsman, disposed towards quarrelling and folly.
Curly
A friendly she-dog, whom Buck befriends early on, her life is cut short viciously when she naively approaches a larger husky, who rips her to shreds. Her death warns Buck of the savagery of the law of club and fang.
Dolly
A she-dog who dies of madness, (rabies), on the trail.
Sol-leks
A one-eyed dog whose name means "Angry One.” A solemn and moody animal, he does not like being approached on his blind side.
Billee and Joe
Two huskies Perrault acquires on the trail.
Manuel
A gardener at Judge Miller's Santa Clara estate, he kidnaps and sells Buck to an unnamed dog trader in order to pay off his gambling debts and support his large family.
The Scotch half-breed
A courier of Scottish descent, he takes Buck and his team on a long and heavy mail delivery run. He shoots Dave to save him from a long and painful. Later, he sells Buck and his team to Hal, Charles, and Mercedes.
The Outsides
The six dogs that Hal acquires, including three short-haired pointers, a Newfoundland, and two "mongrels.”
The Insides
The remaining dogs of François and Perrault's sled team, who are sold to Hal. They include, Buck, Sol-leks, Billee, Joe, Koona, Teek, and Pike.
Pike
The "clever malingerer” of François and Perrault's sled team, who teaches Buck how to steal.
Teek and Koona
Two huskies acquired by François.
Skeet and Nig
Two of John Thornton's dogs.
Hans and Pete
John Thornton's travel companions.
Timber Wolf
The wild wolf that invites Buck into the woods.
"Black” Burton
A man whom Buck attacks while defending John Thornton in the bar at Circle City.
O'Brien
John Thornton's friend from whom he borrows money to cover Matthewson's wager.
Matthewson
The rich prospector who bets against John Thornton that Buck can't pull a one thousand pound sled load.
The Yeehats
The tribe of Indians that murder Thornton and ravage his camp. Buck kills them in retribution for Thornton's death.