I know people say there is more Bully etc. attacks because their owners are shit. But then how do you explain the case in Sydney a few months ago.
A family was having a BBQ and the neighbour was invited. He brought his 2 Rottweilers which he loved and were very well cared for by a decent bloke who they had known for years. They also knew the dogs well.
The little girl (8 I think who knew the dogs very well) who lived in the house got up from the table to do something whilst everyone was eating and one of the dogs suddenly went for her, the other one joined in and between them they killed her outright. Blood everywhere.
These were dogs from a loving owner, well cared for, not owned by some scumbag bogan full of piercings playing the hard man.
Something in these big dangerous dogs causes this behaviour to suddenly attack. And when they do they can kill very quickly.