I doubt if you have any experience in genetic backgrounds of any dog, at least you know nothing about Pits and pit/crosses...Most maulings and deaths Pit and Pit X is #1 and Rottys are number 2...Read some stats on it. all states keep such records when a person is mauled. Police reports taken hospital records etc....look somemore you are missing a lot. And if you expect me to do your research, that will cost you some money...I wouldn't work for free to do your job.......:O)
You could start a google, dog and maulings and death. It will bring up lots of them...not all but the largest majority are pit/pit X/ rottys....:O) all the best on your search..
The rest has been beaten to death.
You seem like a fairly decent person, granny, just mistaken. (besides, I like goats:)) I really wish I had enough money to hire you to do some research, as I do have a project and no time, but you'd have to drop the poisoned bias and be objective.