Hard to imagine a stranger getting into a close combat situation with this animal without a major ruckus. ???? If the dog was trained in food refusal he would not go quietly ????
That's the part I find hard to imagine - mine barks at strangers if they come close unless it is someone he knows well. But he isn't a show/performance dog so doesn't know as many people as a show dog would.
I notice whenever you see K9 dogs and their handlers (real life cops) those dogs are not quiet. Unless the dog did bark before getting in the van and the owner inside didn't hear it. The value of using real fences.
Most training uses treats (can be as simple as kibble) as rewards so these guys do not refuse food.