Myth (mith) n. 1.an invented story, fictitious person, etc. 2.a belief or set of beliefs, often unproven or false, that have accrued around a person, phenomena or institution. Illustration above: An Old World etching depicting the Werewolf mythology.

Aren't pitbulls MEAN and VICIOUS?

No more vicious than golden retrievers, beagles or other popular dogs! In yearly tests of over 240 dog breeds by the American Temperament Testing Society (ATTS), pit bulls consistently achieve a passing rate that's as good or better than the other most popular breeds.

How did your favorite breed do? Check here: ATTS.org

In the ATTS test, a dog is put through a series of confrontational situations. Any sign of panic or unprovoked aggression leads to failure of the test. The achievement of pit bulls in this study disproves once and for all the old tired belief that pit bulls are inherently aggressive to people. Like any breed of dog, a healthy pit bull that is properly raised will reflect the good care his owners have invested in him.

Don't pitbulls have LOCKING JAWS?

Don't be silly. A pit bull's ability to "lock on" with its jaws is one whopper of a myth that refuses to let go. There is no 'enzyme,' no special mechanism that would make a pitbull's jaws 'lock.' They're DOGS, not alligators. Need proof? After research, Dr. I. Lehr Brisbin, University of Georgia concluded, "We found that the American Pit Bull Terriers did not have any unique mechanism that would allow these dogs to lock their jaws. There were no mechanical or morphological differences..." The same silliness shows up with myths about bite pressure.

Don't buy into media hype, it'll steer you wrong every time.
Bite pressure fact checking, reported by The National Canine Research Council (NCRC)

Aren't pitbulls unpredictable around CHILDREN?

Pit bulls have enjoyed a long history as favorite children's companions and family pets. When well socialized and properly raised, they're the perfect breed to tolerate the rough and tumble play that kids can dish out. Pit bulls tend to be drawn to the joyful optimism of children and love to meet them with tails awaggin'! Some dogs may not be suitable with young children because they could knock them down in their exhuberance. Common sense dictates that children should be taught how to properly interact with dogs (of EVERY breed) and should never be left alone with a dog unsupervised.

Source: http://www.badrap.org