We were in Colorado this summer in the mountains in a travel trailer - it was about 37 degrees overnight. Rowdy was SOOOO cold (and would NOT weat the sweater I got for him). I got one of those thick soft polar fleece blankets - actually I just bought a piece of thick polar fleece at the fabric store (cheaper than a blanket) and I put it in his crate all fluffed up around the sides so that there was a little hole right in the middle. Rowdy would snuggle down into the hole and he stayed warm as a bug. Also, I put an old (flat) pillow on the bottom of the crate so that he was not sitting on the cold floor. Then I draped a towel over 3 sides of the crate but left part of the front of the crate uncovered so that the heat could get into the crate. In the mornings when I would roust him up to go out, he was as snug as a bug!
