Oh we had a cocker spaniel briefly when I was a kid and she was a disaster, too! I love rotties though, but I've met some really lovely ones.
So at the ocean today, there were people everywhere with dogs running around, off leash, with them hardly paying attention to them. One ran up to my parents' dog (who was on a leash), owners didn't even look over. I was going off on a tangent lol. This is why dogs bite, and fight, and why breeds get a bad reputation. You put a boerboel or a pyrenees even, in that situation that is entirely against its territorial, protective nature and yeah, dummies, it might be aggressive! My dogs were happily at home patrolling the property lol! My chow mix could never handle that, so I respect that and keep him out of those situations!
Btw brrrrrr it's really cold at the ocean in November lol. There were crazy people surfing too. It was maybe 38 and the wind was whipping. But DD liked it at least!