Whenever there is a victim and the body looks like it's been mauled by a wild animal, or a dog, it always comes down on the pitbull.
Watching supernatural last night and it was a werewolf episode and the M.E. said something about the guy being torn to shreds by a wolf, but since there are none around, she would say pitbull. I hate that they are so specific, why not just day rabid dog or something why add to an already bad, and false, reputation.