As the man died from frostbite and hypothermia the dog stood by him confused and wishing for warmth and company.
It was time to leave his owner and move on, the dog was walking for days until it came across this cave and it wasn't snowing anymore. the dog found it's new home.
The next day the dog woke up to a whole pack of wild dogs outside the cave which was right by a watering hole. After watching his owner die he thought he would never find a family again but now he is happier than he ever was.