This is one of those images that has pinned, repinned and shared so deeply that I have not been able to find the original source… nor do I have time. Apparently they are Norwegian Forest Cats.

Edit: Thanks to Katja BF for directing me to this great video on the breed:

http://animal.discovery.com/tv-shows/cats-101/videos/norweigan-forest-cat.htm

The Old Wolf has spoken.