You have to show a dog who is boss, in dog language that is the alpha male. This does not mean that you punish the dog. It means it shows the dog you are in control. The dog already has a good idea about this because you control its food and treats. I always think a dog looks at us as one who controls light. Light is such an important thing, and I am sure animals realize it. What do they think when we turn on the lights? Be an alpha, but be a good one.