We keep our bedroom cool in the winter so I got some red thermal jammies from Foster and Smith, they are so cute. With those and all her blankets she keeps plenty warm. It seems like everytime I go to the thrify shop I bring home a baby blanket and stuffed toy for Belle. the stuff toy lasts about an hour before it gets de-stuffed and the blanket gets dragged to her kennel. She has one of the hard shell crates and she wants them all in there. I started her out in the crate when we got her and it's been great, she's just like a parrot. I have a fuzzy black throw blanket that I cover it with at night or if I nap during the day and she never makes a sound until she hears me get up. I thought the inside of the crate walls felt cold. It sits next to an outside wall. So I lined the botton half with fleece and cut out the areas when it snaps together, works great.