Yeah thats me ole subtle Ditter. (not usually) LOL! That Rott in the harness could have pulled a cart with BOTH of his owners in it at about 20 mph. Isn't that one thing they were bred to do?
It's one of the things they've been bred to do. They are also sometimes used as a drover/herder, so there is some herding instinct in there somewhere, and of course protection of property, so they're territorial and bold.
They're not a dog with a real specialized following, which is why they are kindof all over the board on temperament. They're all over the board on what people want out of them.