The man is scared he will lose his toes to frostbite. He gathers twigs and grasses and lights all his matches simultaneously, and still the fire goes out.
The man wants to kill the dog. He wants to restore his circulation inside the dogs warm body. He is unsuccessful he is to weak.
He decides he should meet death in a more dignified manner. As the night comes the dog detects death in the mans scent. It runs away in the direction of the camp,"where were the other food-providers and fire-providers."