Here's more info on this breed. The behavior of this breed in your article is extremely atypical. And from the sound of those who want the Presa, those will be dangerously aggressive. But it's natural temperment is not of fighting or viciousness.
There was a quiet, frail little old lady(no exaggeration) in Chicago that bought one of these things. It was for protection. She lived in one of those neighborhoods that never counts a single republican vote.
She never let the dog out except in her back yard. The postal employees were upset, because it barked and they could see it. One of the postals was a rotund female with a mouth and creative mind. She got together with a network's investigative team CBS, or ABC. They should up to interview the woman on film and have her explain why her dog barks at people.
They show was held in the alley behind her yard. Beats me what this had to do with postals, because the yard's not visable from the front where the mailbax is. Anyway, show starts with the TV jounalists and investigators calling outloud from the alley for her to come out. Blah, blah, blah... She says in a slow, quiet, crackly and frail voice, "go away, or I'll let the dog out."
They keep it up and interject with comments about how the old lady's dog's a menace. Blah, blah, blah... She says again, go away, or I'll let the dog out. She said it at least 4 times if not more.
I was dumbfounded why they were pestering her. The dog never got out, was kept in the house most of the time and the "witnesses" were just trashing the bread anyway and telling the cameras how much they feared them.
The TV folks got impatient, because the old lady wasn't cooperating, so then they entered the yard. The same voice was heard from inside the house, with just a hair increase in tempo. She said, "I told you I was going to let the dog out."
Then you hear this potent WOOF, WOOF from inside the house and a second later BANG, as the screen door flies open and the dog flies out. The thing was like a hornet in flight. w/o a break in stride the thing hopped up and chompped on the rotund postal's bossom and flopped back and forth like a fish. She screamed, shook back and forth with her hands in the air as the men on the crew tried to pull the dog off with all their might. Which wasn't much, but it sure did stretch that bossom out. The dog was annoyed by one of the men, so with a single flop, he turned and latched onto this guys arm and the guy stood there trying to shake him off. Just like the dog on "Little Rascals" he hung on, stiff as a board. He had enough of that guy, so he flopped over back onto the postal that just standing there with a dumb look on her face. The dog only swung back and forth a couple times and an inaudible voice called the dog back in.
In a flash the dog was back accross the yard and the screen door swung open. The old lady never appeared. The folks in the alley were in complete disarray. Cameras shaking, panic, and ended it with some comment like, "what just happened?"
It was the best piece of journalistic film I have ever seen. It showed how these animals are obeydient, loyal, effective and an old lady's friend and hero.