Sometimes puppies like to bite when they play. You can work to solve a puppy’s biting problem by doing the following:

• Divert your puppy’s play activities away from your body by encouraging fetch games and discouraging wrestling or tug-of-war
• Remove any positive reinforcement when biting occurs. This means that you walk away and ignore your puppy for five minutes each time he performs a behavior that you don’t find acceptable. You’re not even allowed to talk to your puppy during this time.
• Provide a negative reinforcement for the objectionable behavior. You can do this by painting your skin with vinegar in the vulnerable places you know the puppy will bite.
• Make a noise maker with an empty soda can and a dozen pennies that you can shake vigorously when the biting occurs. Use a firm and loud "NO!"
• Offer positive reinforcement and praise when your puppy plays nice.
• Make sure everyone in the family has the same game plan and follows through consistently