One of my rats likes to sleep on it's back and I decided to snap a pic. It's kinda funny to watch actually since his arms and feet are usually twitching around.
One time the other rat in that cage was sleeping next to him and he had his arm around her, on accident i'm sure, but of course I didn't have the camera near by.
http://i122.photobucket.com/albums/o...DSC00628-1.jpg