My dog is a very disobedient dog. He is a pitbull and likes to bite your feet 24/7. If you are wearing shoes or not he will bite. We need help to stop the biting and we also need help with him trying to run away and escape from our home gate when we try to leave. When we open the door he tries to run out and escape. He also likes to tug on leash on walks. We need help. Thanks!