MYTH: Pit Bulls have locking jaws.
Pit Bulls do not have any special physical mechanism or enzyme that allows them to “lock” their jaws. If you compare a Pit Bull skull to a skull of any other dog breed, you can see with the naked eye that both skulls share the same characteristics and general bone structure.
However, one personality trait of the Pit Bull breed is determination. Whatever Pit Bulls do, they do it with a great deal of enthusiasm, and it is this trait that can make it seem like they have a locking jaw when they bite down on something and are determined not to release it. (source: AKC)
MYTH: Pit Bulls are all inherently vicious.
This is a stereotype that is biased toward generalizing and condemning an entire breed based on the actions of a few bad people. The truth is that each dog should be evaluated by his own merits and not by his breed. A corollary truth is that there truly are no bad dogs, only bad people. (source: AKC)
MYTH: A Pit Bull that is aggressive toward other dogs will also be aggressive toward humans.
Dog-aggression and people-aggression are two distinctive traits and should not be confused. Unless a Pit Bull has been poorly bred or purposefully trained to attack humans, they generally love people. They are, in fact, one of the most loving, loyal, friendly and dedicated companions you can have. (source: AKC)
MYTH: It is better to adopt a Pit Bull puppy instead of an adult.
It’s a fact that puppies are adorable. But the thing about puppies is, well, they grow up. And as they mature, their personality develops and that’s when you really find out whether your Pit Bull is dominant or submissive with people, or whether she is aggressive toward some, none or all dogs.
Dog-intolerance and dog-aggression are traits that do not develop in some dogs until they are fully mature. It is possible that the cute little puppy you adopt who is friendly with all other dogs may not like other dogs at all later in life, even dogs she has grown up with and lived with for her entire life. (source: AKC)