There are many ways to correct this kind of behavior. What I have done in the past with "mouthy" puppies is to hold their mouth shut, gently but firmly, while saying "no teeth" then let go. It will take a little while to get it, but I haven't had it fail yet. I have also used a sharp, loud "AH" sound (like the sound of the letter u in the word "up"), and have seen good results as well when adding that to the above action of holding mouth and saying no teeth. When their mouth is on you, say "AH" then take the muzzle gently in your hand and say "no teeth". I have also read that by yelping in a high pitch voice, sounding like a litter mate who has been bitten a bit too hard, that should stop the behavior as well, though I have never tried it. As for pulling at your clothes, a firm "NO" with the removal of his mouth from the object and replacing it with a chew toy is something that has worked for me as well. The pup obviously has bonded with you, more so than your wife. If she is willing, she should spend some quality one on one time with him to develop her own bond with him. He obviously doesn't see her as an Alpha in the pack, and she needs to change that. It will take time, and commitment on both of your parts to make a happy home. Remember, he is still a baby, and will act accordingly for a while more...it will get better, hang in there! Good luck! | 
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