First of all, welcome to Pet Talk. Second, I would get him nuetered around the age of one. He would calm down a lot after getting nuetered. I agree with what Giselle says. When you tire a puppy out they don't bother you. They just sleep. I also heard that when puppies chew and bite, that means they are bored. Play with him more. He would enjoy it and you will be a lot happier without all the biting. Good luck