I have a male german shepherd who is a year old now. He has been aggressive since we got him as a puppy. We have paid for about 3 sessions of private training with him an he has gotten a lot better but still really mean to me. He listens to my husband but will even bite him if my husband tries to put him in his cage. He is in the military an I have been left alone with the dog an feel like I can controll him an he is controlling my life. I can't discipline the dog or he will show his teeth at me an try to bite me. When I leave for work he acts sad but then I went up to the window to say bye an he showed his teeth an acted like he wanted to attack me. He recently chased after a little girl an the cops were called. I fear that one day he will really hurt someone an my husband dosent want to get rid of him. I have no idea what to do this dog is too strong an crazy for me I sprained my ankle tonight an got a bloody elbow from him running into me. Does it sound like there's hope for this dog to get better or once a mean dog always a mean dog?