I think a big thing people over look with dog bite stories, is whether the dog is provoked. Sometimes dogs do randomly bite innocent bystanders but in most cases someone has done something to piss the dog off. Seldomly does a dog run up wagging it tail, take a chunk out of your arm, then run off wagging its tail. I dunno per say that bit pulls are more aggressive by nature or that its a physical ability to inflict damage, they were bred to be very effective at killing other dogs. I mean 10 bit by a Lab only 2 of them will have serious medical problems, where as 8 from the pit bull will, simply cause it can do more damage. All 3 pitbulls ive known i have played rough with, they bite me when we play but they know the difference b/w playing and fighting. Yeah i agree this thread is gettin redundant but people just pick on pitbulls because thats what u hear the most horror stories from, if the owners are nice to their dogs and the people around the dog are nice and pay attention to its demeanor its 99% of the time not going to bite you.