Yeah I learned how coyotes and wolves bait and ambush dogs.
We had a neighbour in Ontario who was quite anti-hunting and allowed nobody to hunt on her property...until a coyote sashayed into her yard in broad daylight and snatched up her little rat-sized dog and took off with it. After that she was very insistent that when I went coyote hunting I would start and/or end my route on her land. She still didn't want "her" deer or turkeys or rabbits to be shot, but 'yotes were definitely on her hit list.
Duke sounds off when he hears them, but he seems to know that they represent danger and he takes no chances.