DO PIT BULLS HAVE A SPECIAL ENZYME THAT ALLOWS THEM TO LOCK THEIR JAWS?
This is a very common myth. Pit Bulls are just another member of the canine species and have the same jaw structure as any other dog. If they had a special enzyme or other physical mechanism that allowed them to lock their jaws, we would have to reclassify them as a different species. However, Pit Bulls do seem to have an above average amount of determination for things they are interested in. In fact, they were selectively bred to never give up. Their focus may be barking at squirrels, fetching rocks or sticks, but whatever they do, it’s done with a great deal of enthusiasm. If they happen to grab onto something they don’t want to release, it can be quite difficult to extract it from them. In addition, in the heat of a fight, Pit Bulls tend to grab a hold on their opponent and shake as any canine would do with a normal prey. A breaking stick may be needed to break the hold. This may seem like a locking jaw effect, but it’s only a strong determination to win the fight.
