At :24 of the original video you can see one horse quit and run down an alley. The other horse stops and basks in the glory. They are acting just like the wild horses in another video on this post and they look like any other stallions that I have seen fight. Very very rarely are stallions injured by each other. They may get a little peeled up but one stallion doesn't kill the other one. Usually one dominates the other and the weaker one runs off. If they are pretty evenly matched it may go on for a while but horse teeth are not designed to tear flesh and they do a pretty poor job of it. I wouldn't participate in this and I wouldn't pay to watch it but I'm not outraged by it.
There's nothing like the Rockies in the springtime... Nothing like the freedom in the air... And there ain't nothing better than draggin calves to the fire and there's nothing like the smell of burning hair. -Brenn Hill