I have family who own Pit-bulls and they are the most lovable dogs ....however in the city where I live viz Cape Town the incidents of attacks by PB's has been high in the distressed favela type communities where these poor animals are bred for illegal dog-fighting and for personal protection.
I believe the problem begins with the human animal first -
There is a good chance that your PB will be stolen from your property to be used for breeding fighting dogs - sadly.
I too hope these attack victims make good recoveries ............