Spenser showed a lot of dog aggression at the front door and around his crate. Whenever people came over Spenser would charge the door. He simply had decided that was his job and he got to decide who came in and who didn’t come in. When they would come near the crate when Spenser was inside he would growl and barkat them until they moved back. Spenser just needed to understand that was not his job and that his mom and dad have everything under control. Helping your dog understand what is and is not his job is done through structure with your dog and also using basic obedience commands. If you do not want your dog to charge the front door, then teach your dog what you would prefer for him to do. If you don’t do that he will decide what to do himself, and he will make that decision based on the fact he’s thinking like a dog would about his territory.