Thursday, the dog sign language starts at this thread:
http://neurotalk.psychcentral.com/post567568-22.html
We also discovered that the dogs eyes follow you around the room. See attached.
When I can't figure out what he wants, I get on all fours and immitate him. I will begin by facing him and then I will make a turn towards the door (means want to go out?). If he gets all excited that's probably what he wants.
Sometimes I give him a good belly rub, and if he is still stabbing me with his paw after that, it means he wants to go out (assuming I have not forgotten to feed him).