Puppies have sharp teeth, but they do not know that as they bite everything in sight, including your hands, arms and legs. How can you prevent inappropriate biting in puppies?
Limit Rough Play
One of the reasons why puppies bite excessively is because their owners play rough with them, including wrestling them to the ground, which in turn encourages energetic little puppies to bite their owners. There is no reason to cut off play altogether, but it is important to limit rough play if you see a tendency in your puppy to bite you during rough play. If your puppy tends to bite during rough play, immediately stop playing with your puppy so that he will get the message that biting is not allowed.
Encourage Appropriate Chewing and Biting
Puppies, like babies, need to chew. But there is no reason why the object of their chewing and biting should be your hand, arm or leg. Encourage appropriate chewing by offering your puppy plenty of bones, chew toys and tug toys that they can spend time tearing up. Puppies can play with these on their own, or you can get involved and give your puppy another object that they can focus their attention on.
Squeal “Ouch!” If You Are Bitten
Even the best behaved puppy can turn rambunctious and start biting his owners, whether he is playing or not. Rather than let it go, deal with every instance of biting straightaway. According to Debbie McKnight, an Accredited PetSmart Trainer, as soon as your puppy sinks his teeth into your hand or arm, squeal “Ouch!” (even if you are not really in any pain) and then turn your attention away from him. Acting in this manner will alert your puppy to the fact that biting you is not an act that will be rewarded and that it is inappropriate to bite you.
Puppies have a natural desire to bite and chew, which should not be completely discouraged. However, the object of their biting should not be you, which is why you should take steps to prevent inappropriate biting. Limit rough play, encourage appropriate chewing and biting by offering bones, chew toys and tug toys and make it clear that you do not like to be bitten.
Pets.com: Good habits every puppy and kitten should know, by Debbie McKnight, Accredited PetSmart Trainer