Folks, here's some general guidance for the rest of your life: never try BJJ on a pitbull if it's attacking you. A few years ago on AXS TV's Inside MMA, Ron Kruck did a report on a kid that somehow subdued an attacking pitbull with a guillotine he learned in MMA, but aside from this kid who apparently has metachlorines running through his DNA, don't go to the ground with a pitbull. This will probably be the first and only instructional BJJ you will see demonstrated on a pitbull for the rest of your life. Fortunately this pitbull actually knows BJJ, so he didn't spaz out and do something outlandish -- like try to bite this guy's crotch. Check it out.