Pit Bull Puppies are rarely vicious at birth. Occasionally one is born with a neurological dysfunction, but if bred for gentleness and brought up as a gentle dog, a Pit Bull makes a fine companion and a fine family dog.
I work in a Family run Kennel and we had a year old Pit Bull who had lived with the owner since he was 8 weeks old (and she had 10 other dogs, including a huge German Shepherd female). The Pit was adopted by a couple a few weeks ago. He is a very gentle dog. Not food aggressive. Great with children, cautious with cats. And he had a tenor bark (I said we neutered him too young and he turned into a tenor.)
Only this dog wasn't leashed. Take the Pit and sue the owner. And if the seeing eye dog can no longer work, the Pit's owner should have to pay for the replacement, as well as a fine for allowing his dog to run loose and for failing to stop the dog fight.
Yes, I'm an animal lover. I also loath dog owners who raise dogs to fight, as Michael Vick (former QB for Atl. Falcons) did. I'd have definitely given him more time in jail.