Such amazingly athletic dogs wow

everytime I see videos of these guys I'm so amazed. Watched plenty of trick videos of them too. It's incredible what they can do. Although I must say that the fourth clip around 38 seconds just seems really stupid amd dangerous and just like untrained dogs? Although they are wearing muzzles (which they sometimes use to build confidence/teach them how to "fight" without being able to bite) and on long lines but he doesn't appear to be wearing a suit or headgear or anything... and there are three dogs. If it IS supposed to be some sort of training exercise, it is a stupid and dangerous one and quite frankly, I don't think he knows what he's doing lol I may be wrong. Maybe someone who knows more about it can tell me. I also don't think the one with them running straight towards the kids is very smart, even if he's protecting them, and the puppy in the last clip seems kind of aggressive?, but besides that, it's a cool video and wow are they athletic lol they are wayyyyt too much dog for me to handle though and are always "on", no off switch, so I wouldn't get one now or ever. Except maybe way way in the future when I have more land and time to devote to them. Anyway, soo athletic lol