for me there are no bad dogs, none .. only bad humans who don't know responsibility. My 4 dogs are treated like kids ... spoiled rotten. I grew up with dogs ... yes you can have a dog that is disturbed, usually from in breeding ... and sadly the only thing one can do is put the animal down ... I would not and will not own a dog that was dangerous ... it just isn't safe and things like this occur. It is very sad for the person who gets his or her life destroyed ... and unfair also to the animals that deserve a better owner who knows how to train and can recognize a problem before it gets to this stage. Everyone loses especially the one being mauled. my opinion for what it is worth