One person who I don't know but have reliable information about this incident. The owner was attacked by her own Pit and lost her leg below the knee. That's some weird shit right there. Don't know if the dog was a rescue.
I might add that the only dog that ever bit me was a St. Bernard while I was shopping in a country store. That hurt like hell and the bruises lasted for a month. Fortunately just some muscle and tissue damage. Could have been a lot worse.