Everyone has their own favored sleeping positions. On the back, curled on the left side, hanging upside down from the cave roof.

Rhubarb has one of the most specific comfort positions I’ve ever encountered.
Note the careful alignment of the tail, so that the tip won’t brush his nose if it twitches in his sleep; the careful crossing of the left front leg and the right rear leg; and, of course, the all-important placement of the right front leg, the paw set just where it needs to be to hold the rear leg.

And what of the left rear leg? Where’s that?

Look closely. Very closely. If you peek between the tip of Rhubarb’s nose and the angle where the right legs overlap, you can see just a hint of the left rear leg. That’s right. It’s under his head, serving as a very fine, very snuggly pillow.

Ah, to be even half that flexible!