 Each of them had the same problem. Their dog basically tries to rip their shoulder off at the end of a leash. And the guy I was working with, he let the dog off the leash. What do you think the dog did? Started jumping on him, grabbing the leash with his teeth. Pretty disrespectful behavior, wouldn't you say? You might not. But if that dog were part of a dog pack and did that to the alpha, he'd get a smackdown.