My wife and I have a 6 month old Weimaraner who weighs 60 lbs. He has
started demonstrating aggressive behavior both by snarling, growling and recently by lunging and trying to bite me in defiance of a command He was trained in obedience - puppy kindergarten and I mentioned to the instructor then that he would bark when I gave him a command that he didn't want to obey. I was told to just ignore him as long as he complies to the command but over the last month he has gotten a lot worse. I need help as to what I should do when he does this. I've tried to correct him by saying NO!! when he does this but to no avail. I've also tried pinning him down in a submissive position holding his mouth but that doesn't seem to work either. He normally runs away when you come toward him to discipline him which makes things hard as well. My wife and I are expecting our first child this September and would like to correct this problem before the child comes. Any suggestions are greatly appreciated. Thanks