Funny how hard they sleep sometimes. From a stand I have seen a whitetail buck flop down like a tired dog and proceed to fall fast asleep and even twitch like dreaming dogs do. This was in the rut and was on a little knoll with several other deer who were bedded but not asleep.
Great pic is right! It's really cool to see them like that. I don't know how much of their day they actually spend sleeping but I bet it isn't much. A couple weeks ago I saw this little two point laying flat on his side, legs all sprawled out, head down. I honestly thought he was dead. I had to watch him for 10 minutes before he finally picked his head up. Wish I would have snapped a picture.