[dippasan]

So sorry for your loss. Horrible.

In my humble opinion, these types of dogs are aggressive by nature and it does not take much to bring it out in them. My father in law loved these types of dogs, (Rottweilers, pit bulls, Dobermans). His dogs were highly trained and were "show dogs" and on many occasions I saw his own Rotty's growl, snap and behave very aggressive towards anyone.
I never let my guard down and never ever trusted these animals or these breeds around my kids or my own dogs.