1. London describes the dog as a "big native husky," and the old-timer--because of his nickname and his practical advice to the newcomer--seems to be native to the region. Because of this, both "characters" warn the cheechako not to take the cold lightly. The old-timer verbally does so, and the dog's actions (on several occasions) should have made the man use caution. For example, the dog does not want to leave the fire behind once the man realizes how cold it is, and he follows behind the man because he recognizes the danger of the ice patches.
2. The newcomer views the old-timer and dog in a similar manner. He thinks of the old-timer as "womanish" and becomes frustrated with the dog when it does not readily comply with his foolish attempts to get the dog to advance toward danger.
3. The ending of the story also provides a commonality between the dog and old-timer. Both survive. The dog survives because of its instincts and indigenous nature. Likewise, the old-timer knows better than to venture out in such cold weather and remains safe at camp.