Read the excerpt from an adaptation of "To Build a Fire.”When he fell down a second time, the dog curled its tail over its forefeet and sat in front of him, facing him, curiously eager and intent. The warmth and security of the animal angered him, and he cursed it till it flattened down its ears appeasingly. This time the shivering came more quickly upon the man. He was losing in his battle with the frost.