Good grief, you have four kids age five and under and got a puppy? You have a 12 week old puppy and are expecting it to SIT and other stuff for 5 year old kids and under? Your 12 week old PUPPY is a BULLY??? I'm sorry, but maybe it wasn't such a great time to bring in a little landshark. Maybe. And maybe not. But, puppies mouth because that is how they explore their world. You need to teach them not to mouth the children. But I really don't know. It sounds like you have your hands full, and teaching a puppy is got to be a bit much. But expecting a puppy to listen to obedience commands from people under the age of 5 is a bit much at this point. First train the puppy, and then train the kids how to do the commands with the dog, and train the puppy to obey commands given by the kid.
As for the tiny kid, I don't know. The puppy is not abnormal, and I just have never met a 12 week old puppy that was bullying children. Boisterous, mouthing, energetic, sure. But bullying. It's a baby. It's more of a baby at this point than your baby, but won't be for long, and it already outweighs your kids.
But you expect the puppy to ignore the kids??? Puppies live in litters, and children speak higher and run and play, and how can a puppy not be infected by that.
I think you're not being totally reasonable about the puppy, and I can understand why. At the same time, I just don't think you have realistic expectations for a puppy of this age.
Bear Cub, Hepsi-Pepsi
Cujo2, Karma Chameleon
Ramona the Pest, Kojak -- who loves you baby?
Tiny Tinnie, Susie's Uzzi, Kaiah -- The Baby Monster.