As the days continue, White Fang gradually realizes that Collie's bites are becoming more playful and flirtatious. When she "nipped his ear," White Fang realizes that it is an invitation for him to follow her, in the same way that, long years ago, his mother followed old One Eye into the forest.
In the final chapter of the novel, White Fang performs a feat which causes him to be called the "Blessed Wolf." It seems that years ago, Judge Scott had sentenced a criminal, Jim Hall, to fifty years in prison. Even though this criminal, Jim Hall, had been guilty of two earlier offenses, he was innocent of this offense, and he had been framed by the police.
As a result, Jim Hall believes that Judge Scott is a part of a conspiracy. Thus, when Judge Scott sentences him to fifty years in prison, Hall threatens to get his revenge — eventually — on the Judge. Years pass and, meanwhile, Jim Hall becomes a thoroughly hardened criminal, mainly because of his brutal treatment while in prison. But while he is in solitary confinement, he manages to escape, killing three guards while doing so.
When the Scott family hears about Hall's escape, everyone except the Judge is frightened. The Judge's wife, Alice, secretly goes downstairs every night and lets White Fang in so that he can sleep in the hallway. But since White Fang is not allowed in the house (by the Judge), Judge Scott's wife has to get up early each morning and let White Fang out. Consequently, on the night that Jim Hall silently breaks into the Judge's home, White Fang is there, and just as the convict is ascending the stairs, White Fang attacks him and quickly kills him. White Fang, however, is seriously wounded himself during the combat, and Judge Scott wires San Francisco for the very best doctor who can be found — a Doctor Nichols. Any other dog would have died, but because White Fang is a wolf-dog, his constitution is different, and he survives.
After this episode, Alice Scott names White Fang the "Blessed Wolf," a name which he retains for the rest of his life. When at last the Scotts bring the Blessed Wolf home from the hospital, White Fang, in his weakened condition, is taken outside so that he can see the puppies which he has fathered. As the puppies come sprawling over him, "he lay with half-shut patient eyes drowsing in the sun."
