To insulate your outdoor cat house for winter, start by lining the walls, floor, and ceiling with foam boards, reflective insulation, or straw bedding to retain heat. Elevate the house on bricks or a pallet to prevent cold ground contact, and seal any gaps with weatherproof tape to block drafts. Add a pet-safe heated pad or self-warming bed for extra warmth, and use a small entrance w... https://tiggytails.com/collections/cat-tower