Ask most people what the most dangerous type of dog is, and they will probably tell you it is the pit bull. These dogs definitely have a reputation, to the point that some people will not even consider owning them.
However, a recent study just asked thousands of dog owners about their dogs' attitudes. It posed different scenarios -- like coming into contact with a brand new dog at the dog park -- and asked how aggressive their dogs were.
According to that study, pit bulls were nonaggressive far more often than people assume. The most aggressive dog is one no one ever worries about: the chihuahua.
Now, it is worth noting that many pit bull owners are well aware of the way others feel about their dogs. The study's author acknowledges that. Since this was based on self-reporting, would they essentially skew the data by reporting that their pit bulls were safe and nonaggressive when an outsider may disagree?
Perhaps more likely, though, is the impact of size. A chihuahua could be very aggressive and attack someone, and it may still cause minor injuries -- or none at all. A pit bull in the same situation could cause serious injuries or even kill someone, just because it is a larger and more powerful breed. That does not necessarily make it more aggressive.
Of course, if you have been bitten by a dog, you likely do not care what breed it was. Injuries are injuries, and you just need to know who is responsible for providing you with some financial compensation. Make sure you know what legal options you have.