The sight of the dog put a wild idea into his head. He would kill it and bury his hands in the warm body until the numbness went out of them. Then he could build another fire. He spoke to the dog, calling it to him; but in his voice was a strange note of fear that frightened the animal, and it would not come.

How has the man changed since the beginning of the story?

He has begun to fear the dog.
He has become desperate and agitated.
He has become emotional and sensitive.
He has begun hoping for a painless death.