Tell the dog it looks chubby in its fur, then yell at it for not keeping the house clean enough and tell it the dinner it made for you tastes horrible. Let your dog catch you looking at other dogs and hear how you fantasize about those other dogs. Lastly, make sure the dog loves you more than you love it. Once you thoroughly given your dog a selfesteem problem, you become the alpha. No more muss, fuss, and plenty of sandwiches.