Winston stretches out like he is dead, and goes solid.
I knocked him off the bed one time when he was a puppy, and I looked on the floor, and he was still asleep, all stretched out, like nothing had happened.
Muffin curls up in a ball. Cricket hides under the covers and curls up in a ball.
Sandy June sleeps on her side.....er, wait, better not go there.
Now Kris, my little furball sleeps on his back, so that contributes to his snoring too, but his face is smushed in too. Note that Michu's face is not as smushed in as the cat in the photo.