This last Sunday a stray dog, we know its part rottweiler and think its part boxer, came wandering around our house. He can't be older and 6 months, and hes been sleeping on our porch. He has no collar and we live pretty close to the country so we think that his previous owners abandoned him out here and he may have possibly been beaten because he is really skiddish and runs away when we try to get closer to him, but he keeps coming right back. We leave him water and food, and I lay some treats out for him. I don't want to run him off, just wondering if anyone had any advice on how to get him to trust us and not to be scared of us.