GET A SHOCK COLLAR...my Heeler always wears hers....goes on first thing in the morning and the last thing done at nite. You must train with them. Set up a situation and say nothing to the dog...just shock it on a really high setting....the dog will think the chicken, cat, bunny, etc did it. And I would not own a dog that growed at me....you have an out of control dog. Shock collar will fit that!