The Bear's Winter House - John Yeoman, Illustrated by Quentin Blake

The bear is behaving very strangely indeed: collecting moss, logs and branches to build a winter house. The other animals think this is silly, and laugh at him, but when winter comes, bear is cosy in his winter house while the other animals suffer in the cold. Being a very kind bear, he invites the others in. Unfortunately for the bear, they are too excited to sleep, and it seems he will get no rest at all this winter! But when spring arrives, he finds a solution...