Exposing Their Belly Is a Sign of Respect
When a dog exposes its belly to you, it is demonstrating its respect and submission. It could also indicate that he wishes to play with you. By rubbing their belly, you can encourage them to keep doing so.
If you rub their belly, they’ll want to keep doing it because they’ve learned that every time they do it, you’ll give them a nice massage. When a dog is attacked by another animal, however, it can roll on its back.
Tucking Their Tail
When your dog is upset, he or she may tuck his or her tail between its legs. This is what dogs do when they are nervous, scared, guilty, or ashamed. It’s almost always a bad sign.
If you see your dog doing this, comfort him and assure him that he is safe. Pets and a soft voice can help you achieve this. Dog treats may also be effective.