I have a question a out growling and protectiveness. I read the other post about dominance and Pacer does those things but he sometimes takes it way further. This only happens when we give him a special food treat. For example, he used to do it when we gave him a pig ear and last night we gave him doggy ice cream and it was the worst I have seen. He will start to growl when he senses you are near him and if you go to pet him he wil growl open mouthed and turn to glare at you. If you dare reach your hand any where remotely close to his head you might lose a finger. He is only 15 weeks and I cannot have this develop into a habit. I did notice last night that his tail was tucked the whole time he was eating his ice cream. What should I do to get him to stop this behavior? Like I said it only happens with a special food treat. He doesn't do it when playing, ever. Help!