To Build a Fire

I assume you are referring to the dog's refusal to come to the man when called.... the man wishes to kill the dog and warm his hands in the dog's carcass. The dog instictively knows it is in danger and backs away.

1. why did the man walk very carefully on top of the frozen stream?

2. why was the dog unhappy with the man?

3. what were three mistakes that the man-made?

4. Shows that nature plays a very important part of the story.