When they're not hunting or eating, their socializing or resting. Most of the wolves' activity occurs during the night, says Smith. Mainly because it's cooler. Even in winter, a sunny day for a wolf is hot. Their thick coat is so hot they prefer cooler weather.
Wolves laugh at the cold.
The cold to them is their friend. I don't think it can get too cold for a wolf. And, they like to use the cover of night to their advantage. As winter progresses, Smith says wolves get more efficient at hunting. Elk, their primary prey, are weakened as winter drags on, and as a result, the ungulates are more vulnerable.