Nana, I would go to the library and get some books on raising a puppy. They will have much helpful information for you. A good one is Good Owners Great Dogs by Brian Kilcommons and Sarah Wilson, but I would check out several so you can get some different perspectives. At your dog's age it is also teething, so make sure it has rope bones, nylabones, etc. Once this stage has passed some of the mouthing will decrease as well. Aly's advice is right on target.