Had 3 Dobermans growing up.
Can't grab their tails because they're not there like most dogs.
No long hair to grab and hold on to.
Very fast and strong.
I agree though, most of the dog listed are great.
Surprised you didn't list the Bull terrier, Tosa, Boxer, Staffordshire bull terrier, pit bull terrier (no not the same as am staff).
I reckon this would be an awesome guard dog. I voted Shepherd having had one, and Akitas are supposed to be very protective.my akita shepard mix