So much bad craziness in this breed they’re not trainable as security/K9 dogs...
There is a reason why LEO’s and the military team with German Shepards.
So here's a problem. After unfortunately winning an election some time ago, I had the unenviable task of enforcing the "No Pit Bulls, No Rottweillers, No Dobermans No dogs over 50#" Rule in local Public Housing (such as it is around here).
SO here's what I heard "That ain't no pit bull, he's just a mutt." Yadda yadda yadda. Plus the characters who keep these dogs ... and they are characters (usually repeat customers of the local PD and the County Sheriff) ... don't exactly run scientific breeding programs. We have had complaints about CHow-Pit, Rott-Pit, Mastiff-Pit etc. etc. crosses, Boxer-Pit, Doberman-Pit, you name it. All mean as hell.
Now defenders of this "breed" and they are a "breed" unto themselves, love to rave about the "qualities" of these dogs.. But there is one thing in the US of A that's hard to argue with and that is the Insurance Industry, God love'em. Emergency Room Docs, Police Departments. They know the score.