by KYW's Nan Tallena

Puppies are adorable, but nipping and teething can be a problem.
    
Nipping behavior is perfectly normal, however.  It is a form of social interactive play.  
   
Puppies should never leave their litters before seven or eight weeks of age.  That’s the crucial time when they learn sociability by interacting with their littermates.  Redirect this behavior by providing safe, acceptable chew toys like Nylabones and Kongs.  Some can even be frozen and filled with cheese or peanut butter, providing hours of safe, healthy chewing and plenty of interactive play.  
  
Always praise your puppy in a non-excitable way whenever he is calm and relaxed.  If your puppy does nip, say “no” immediately, then quickly turn your attention away -- even leaving the room if necessary -- without ever touching the puppy.  Then return and gently try to touch the puppy again in a non-excitable way.
    
Keep consistent in this routine until your puppy understands that nipping results in less attention.  And remember to always praise your puppy whenever he is calm.