[Cheyenne60041]

My personal experience with my Rottweiler when he was about a year old and did that the first time over grooming issues was not because he was in pain, but bacause he didn't like what I was doing and decided that he was old enough to stand up to me. And let me tell you, I did not take kindly to that!
I garbbed his nose put it up to my face and said in my stern voice "No!" and what do you think he did? He did it again louder right in my face. I dragged his ass in the kitchen, rolled up a small newspaper and started smacking him on his nose (not hard at all, but with a lot of noise) until he stopped baring his teeth and growling back and admitted my superiority. Every once in a while he needs a reminder of who is in charge, which is NOT him.
Another thing that Lord really gets punished for is talking back to me. Not often, but once in while you tell him something and he starts barking right in your face. That is just not allowed in my household.