Proper outdoor housing
Your dog needs a warm, dry home if he is going to spend any length of time outdoors during winter. Appropriate doghouses are well insulated and just large enough so your dog can stand up, turn around and comfortably lie down. Anything larger is more difficult to keep warm and allows greater loss of body heat.
For additional warmth, use old blankets as bedding material. Blankets are ideal since they’re easy to remove and wash for a clean and dry environment all winter long. Even dogs that are kept partially outdoors in kennels require protection from biting winds. Provide a doghouse or secure a tarp or burlap onto a portion of the kennel to create a windbreak.