[alice's mommy]

When my son, Daniel, was a newborn, I would hold him by the neck when he would pee in his diaper to teach him not to. I would yell out, "NO Daniel! No peeing in your diaper!" and he would stop peeing.

Doesn't THAT seem ridiculous?! Get a new trainer!!!! The above is, in fact, what you are being told to do to a BABY puppy! This little puppy is absolutely not being aggressive!!! I know just how you're feeling, as those little land-sharks can SEEM to be just devilish and possessed, but honestly, it will pass. Your puppy just needs to be shown what he IS allowed to chew on, that's all! He needs to bite/play/growl as part of his learning....YOU need to show him what he can bite/play/growl at instead of doing it on humans. Redirect, redirect, redirect (etc.) to an appropriate toy. My husband and I literally had a toy attached to us at all times, so that there wouldn't even be a moment without something to shove into Arthur's mouth during that age. Seriously, we had slices all over our fingers from our little monster! And now, six months old, I can barely imagine him from that time. :) They really do grow out of it.

However, BULLYING the puppy isn't going to help at all! Yelling at him, shaking him, holding him by the scruff, will only make him afraid of you. THAT can lead to aggression as he ages. No one wants to be raised by a bully.

And get a new trainer. Yeeash. :(