Your puppy should not be displaying a biting or nipping problem once he reaches the age of 15 weeks or more. By that time you should have already administered proper training techniques and specific commands to get your puppy to stop his mouthing behavior. However, if this is still a problem or if you have adopted a puppy that's a little older than 15 weeks and is new in the home, then the following tips can help you get your puppy to stop biting your hands and nipping at your fingers:

One thing you can count on when bringing home a new puppy is the fact that he will nip and bite at your fingers during the first few days or weeks. This is perfectly normal and there is no reason to get alarmed that you may have purchased an aggressive dog. However, like any behavior you wish to change about your dog, you need to take a few steps so that he realizes that nipping is not something you as the “pack leader” want him to continue doing.

So how do you change this natural biting behavior that a little puppy has? Well the first thing to do is determine his age. This is important because puppies under the age of about 15 weeks need to be handled a little differently when it comes to mouthing and nipping than puppies over the age of 15 weeks.