2 year old pit bull- rotwieller mix. Very friendly dog, but sometimes he seams to be terrorified of my and my wife when we go to give hima treat after his walk or feed him. He hides and when i find him he sits up and pees or rolls on his back and pees. He doesnt do it for my kids, so ihave been having them give him the treats. We adopted him and think he was abused form his original owners. Im not sure how to handle an abused dog, i dont know if im triggering something in him thats making me seem like his old owner. Should i stop giving him treats?