We are not talking about bites. We are talking about vicious attacks. It's not speculation.
There is no doubt that Pit Bulls can be trained to be kind loving dogs. But it is also clear that the margin for error between a pit bull and a golden retriever is beyond large.
http://www.dogsbite.org/dog-bite-statis ... lifton.php
By compiling U.S. and Canadian press accounts between 1982 and 2011, Merritt Clifton, editor of Animal People, shows the breeds most responsible for serious injury and death.
The combination of pit bulls, rottweilers, their close mixes and wolf hybrids:
77% of attacks that induce bodily harm
73% of attacks to children
81% of attack to adults
68% of attacks that result in fatalities
76% that result in maiming
Discussion notes:
Even if the pit bull category was "split three ways," attacks by pit bulls and their closest relatives would still outnumber attacks by any other breed.
Pit bulls are noteworthy for attacking adults almost as frequently as children, a characteristic not shared by any other breed.
If a pit bull or rottweiler has a bad moment, instead of being bitten, often someone is maimed or killed; that has now created off-the-chart actuarial risk.