What has nurture got to do with a dog bred to fight or guard when its breed standard to be aggressive?

What idiot would let a kid sleep with a puppy? Kids+puppies=disaster! Bet that puppy had every right to bite the kid. Sounds like irresponsible parents. Breeding can also have something to do with this. A bad breeder breeds aggressive dogs, gives a dog with a low bite threshold to idiots who don't know how to raise puppies. Now, if that puppy had been given a good home from the start...You wouldn't be under the impression that pit bulls are bloodthirsty beasts out for our blood. How about you take up a new hobby? Read a book about something happy.