I've got a 16HH American Mustang/Morgan cross that was gelded late in life. He is the pasture boss over our mules and foxtrotters and won't let them or anything that I'm training for customers forget it. We use various tarps and other objects to despook our trailriding animals and he will not only walk right up on the tarp but will also grab it with his teeth and run off with it. It's quite a site to see a horse with a 10x12 blue tarp in his teeth running around the pasture. He was a gift from a riding and hunting friend of mine that came down with bone cancer. Gus will be a permanent fixture in my pasture until he dies.