Animals get cold too in the winter. A great insulated dog house (and cats like them too!) is the igloo-style Petmate Indigo Dog House. Not only is it solid enough to hold up to the wear and tear of both the elements and your animals, but it does the job it is designed to do and that is keep your pets warm.
Product Description: The Petmate® Indigo® Dog House with Microban is a top-of-the-line classic igloo-shaped doghouse that is a sturdy and spacious option that provides security and comfort for your dog. Featuring an extended, offset doorway that gives your pet extra protection from rain and wind. Patented dome design keeps the house stable in high winds while naturally shedding snow and other debris that could collect on the top. The heavy duty foam construction will help keep your pet protected from outdoor elements and will keep them warmer during the winter and cooler during the summer. Rooftop ventilation allows for continual air flow. The Indigo Dog House is made with Microban to fight the growth of stain and odor-causing bacteria to promote a healthier environment for your pet. Tool-free construction.