With the recent cold snap the Eau Claire County Humane Society, has already confiscated several pet out of unsatisfactory homes.
The Humane Society officer says pets need extra protection during extremely cold weather like this. Shelters should be fully insulated, should be off the ground a couple of inches and it should have some sort of door on it. Your pet should also have plenty of bedding inside the shelter to help maintain it's body heat.
Also pets food portions should also be increased, and should be supplied with fresh water everyday.