This dog saved your life, luckily you weren't completely alone
The man was too frozen to go any further. He knew this would be the end of his journey.
The Dog sensed death coming for the man and began to drag him to the town in the deadly cold.
The next day, as the man awakes, a towns person explains to him how the dog had brought him here and saved his live when he was close to death. The man begins to realize that he wasn't truly alone on his journey afterall.