The survival situation for Henry and Bill takes a harrowing turn in Chapter 3, "The Attack." The tension begins when the sled dogs, unsettled by the encroaching threat, start to "snap and growl." The realization that the pack is under siege hits home when Bill discovers that "Frog's gone," despite the dog being the "strongest of the bunch." This marks the beginning of a psychological and physical war, as the wolves surround the camp, leaving the men with the grim understanding that they are "in a great deal of danger."
The night is characterized by a state of hyper-vigilance. Both men take turns "keeping watch and sleeping," but the atmosphere is defined by a "restless night" where "every sound startled them." The loss of their sled dogs is a recurring trauma throughout the night; as the animals vanish, the men are left unable to determine if the dogs "joined the wolf pack, were eaten or took their chances in the wild." This loss of their transport and companionship leaves the men increasingly vulnerable.
As the wolves launch their offensive, the encounter turns violent. The "red dog from the wolf pack" emerges as a tactical leader, the first to "jump toward the fire," with the rest of the pack following her lead. The men are forced into a desperate defensive stance, using "sticks from the fire" as improvised clubs. Despite the wolves "yelping" when struck by the flames, the attacks become more frequent and aggressive. Bill’s attempt to use his rifle is thwarted by the darkness, leading him to wisely conserve his "last" bullet, realizing the futility of firing into the shadows.
Innovation becomes the key to their survival when Henry decides to move the "burning logs into a circle." By pulling Bill into this "ring of fire," Henry creates a sanctuary that, while "very hot," provides a critical physical barrier against the "starving animals." This tactical decision forces the wolves to circle the perimeter rather than directly engaging the men. The fire acts as the primary deterrent, pushing the wolves back repeatedly and preventing them from reaching their prey.
By dawn, the situation remains precarious. The "last two sled dogs had run off," leaving Henry and Bill completely isolated. The red dog, observing from a distance, remains a chilling presence, seemingly aware that the stalemate is temporary. The narrative concludes on a cliffhanger, noting that the red dog understands the inevitability of the situation: "Either the men would try to escape or one of the wolves would make it across the fire." This final observation highlights the dwindling options for the men, as the wolves continue "skulking close by," waiting for the inevitable moment of weakness.