He's a rescue dog, was found in park, so who knows what he's gone through, but he's a weird dog. (He definitely was someone's pet because he was housebroken when we got him, and he knew simple commands.) He's, give or take, about 2 1/2 now, and we got him a year ago. He tends to show typically submissive behavior when we pet him, interact with him, but he also loves being with us/near us. For example, his ears often go back or he'll yawn a lot. But he often comes to us, sits with us, and he has to know we'll pet him. Is this just a weird quirk he has? he also doesn't lick at all. In the evening, when he's sleepy, he loves lying on top of our legs or snuggling against our sides. And he gets play aggressive when we do tug of war or fetch. What's up with my dog? Why does he act so submissive?