By the way, I decided not to watch any of the video.
I learned to deal with this sort of thing as a child. Our family dog was very well behaved, but he established dominance over other dogs and was very protective. Normally, other dogs did not challenge him, but there were times when the fights would go too far. I learned to break them up.
Our dog also hunted small prey like rabbits, squirrels, etc. that part did not bother me.
When you have a powerful dog, and you go to public places, you must have control.
You should know your dog too. We used to have a beagle that loved to track animals. When he got on a trail, he fell into a trance and would not respond to anything else. I would have to actually grab him and I could see he was confused for a bit, like he awoke from a dream.
When it come right down to the facts, dogs are predatory animals. When there is noise and fighting when taking prey, it is like the sizzle we hear when cooking a steak.
