Found this on a friends FB page so shared it onto mine. It is astonishing how many people think the dog is happy when it is NOT.
Classic calming signals that a dog gives when he is NOT comfortable. Please note all four signs in these pictures indicating that the dog is NOT enjoying this situation
1. Licking the lips
2. Showing the whites of his eyes
3. Panting when not overheated
4. Turning his head away