[Ringo1]

I agree that due to your pup leaving his Mom so young; she did not have the opportunity to teach him proper bite inhibition.

I see the difference in my Westie - who we got at 8 weeks and in my Lucy - who we got at 12 weeks. The Westie simply does not realize how hard his bites are.

Like someone said, a quick withdraw of your hand and a loud "Ouch" and playtime stops for a while - might help to give him the picture.

Your children like to play with your yorkie and that is good; but supervise their play until you get this under control. You want to make sure that your Yorkie is not getting too rough or 'bitey' and your kids aren't getting too rough either.

I'm sure this is something you can get under control since he is still a puppy.

Try and google "Nothing in Life is Free'. It's a very gentle training program of teaching your dog manners.

Good Luck.