If you would like to make your cat's bed warmer on these cold winter nights here is an idea for you. Take a close-weaved sock and fill it with 1 cup of uncooked long-grain rice. Tie or sew it closed. Pop it into the microwave for 1 minute. Once it is hot (not too hot, though), wrap the hot sock in a small towel and place under kitties blanket in her basket. This will stay warm for hours and can be re-heated over and over.