I also rescued a Doxie from a puppy mill. He he had not had any human contact. He had been kept in a cage his entire life. He was 8 months old. He was absolutely terrified. He had never even been inside of a house before. All I can say is it takes a lot of patience. My husband used to have to lay on the floor to be at face level with him to gain his Trust. He was terrified of men. I am happy to say that after years of love and spoiling he is a happy healthy 10 year old doxie that I would not trade for anything in the world. Do not give up on your dog. Be patient it will get better