"Aggression: Aggression is conflict
resolution. Dogs use aggression to resolve conflicts, when a dog
enters a human family you need to teach her that aggression cannot be used
to resolve conflict with humans.
The earlier you start this training with
your dog, the better.
Using aggressive methods can backfire
for this very reason. If you hit, slap, grab, push, or are overly
physical with your dog, you are using aggression to resolve problems.
Using reward based methods can go a long
way to teaching your dog. If your dog is showing any signs of
aggression, contact a professional trainer. "