German Shepherd Attacks Pitbull [OFF LEASH DOG PARK] Part 1

The sheperd got in guard mode, he started looking out for his buddies, trying figure out the Pitts intentions, notice how he starts doing semi running around circles, that's a shepherd's way of getting in guard mode.
As a dog trainer, these scenarios right here are why I stay away from dog parks. This video clearly shows this owner has no control over his dog. Most of the people there have no control over there dog.