Re: nipping and biting It will vary from pup to pup as they all mature and grow up at different ages. They only grow out of it to an extent - you will still need to do some training to show your puppy that this is not acceptable behaviour. The more consistent your training the sooner you will see results.
Re: nipping and biting Usually when they lose those needle-sharp puppy teeth is when the worst of the nipping and biting slows down - at around four to five months.