I have a heeler, he bites...
everything he does is with his mouth...
He chews, bites, tugs, knaws and so on and so foth...
He chews on your fingers, he nips at your heels, he even tries to chew on my big nose...
I would never think of trying to stop him of this.
There is difference between this and a dangerous, mean dog that aggresivly hurts someone by bitting...
That kind of dog should be put down....
I have four dogs and would never put up with aggresive bitting...
my two cents..
wstakelin