I guess I was surprised in her reaction or lack of it. The other sheperds would have barked, had guard hair up, and then headed down trail. She didn't even drop her ball. Maybe repetitive action with positive reinforcements really does condition behavior? Is that always a good thing? Or maybe she is too young for me to really know. I just want to make sure I'm not creating a slave to the commands and the ball. I don't want her to not use her animal instinct. Can that happen with positive training?