I have a 9 month old American Bulldog named Lilly. She's a very stubborn dog. She tends to get a little rough with me and I am wondering if this is normal for the age or if its because I have not had her spayed yet (NO I HAVE NO PLANS OF BREEDING she will be getting fixed). She lunges at me and tries to nip my hands and snarls. It seems like shes playing but I don't like it. I refuse to chase her to catch her at that point because I don't want it to be a game. I've tried turning my back to her and ignoring her, looking at the ceiling with my arms crossed (ended up on the floor) I have tried a can of pennies, squirting her in the face with water, giving her a toy instead of my hand and scruffing her. I've now got her tied her to me. I've tried every kind of bitter spray they had at the pet store and she chews on the leash anyways. She's completed puppy and beginner training and passed with flying colors she walks great with a gentle leader and does every command that I ask of her but as soon as the leash comes off she turns into a freaking demon! I practice NILF, I do not let the dog walk through the door first, I don't let her walk me. I don't free feed and I make her lay before I feed her....I just don't know what to do anymore. Did I do something wrong? I've even tried putting her in time out. Is she dominating me or trying to play with me? How do I get this to stop before she hurts me? I've never had an AB before. I've only had pit bulls and akitas and I have not had this much of a hard time.