I googled this after reading blue's thread about his 'third' dog. I have three but unfortunately Lacey can't get on the bed due to her knee surguries. Of course, it gets much colder in Alaska.
Three Dog Night
It will be a co~o~o~ld night tonight. The lows will be in the “three to four dog range” with the windsreaching up to one or more.

As reported in the Aleutian Islands

The Eskimo tribes of Alaska determine temperature based upon how many dogs they bring in to cuddle within order to stay warm throughout the night. The Eskimos cherished their dogs as much as they did each other. They pioneered the use of dog teams, as a means of motivation in some of the harshest and foulest winter weather. Keeping their dogs running (literally) in the wintertime was a necessity of life. So, if you really want to know how to take care of your dogs for the winter, then you take them to an Eskimo for a winter tune-up.
Tune-up your radio, and heed the “Call of the Wild” or domestic in our case.