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Do Pit Bulls Have a Locking Jaw

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Jeffrey Loncosky is the treasurer at Pinups for Pitbulls. He is a pit bull type dog owner and is an advocate against BSL and breed prejudices. 

Do pit bulls have locking jaws?

There are very few animals that have different jaws structures than dogs do. Snakes are one. People tend to think that snakes can actually unhinge their jaws but they cannot. They just have an extra bone and very stretchy ligaments and be able to open their mouths wider at the back to be able to swallow animals whole. Parrots have something called cranial kinesis which allows their jaw movement to be much different. But the main thing is, a dog is a dog, their jaws are the same, it doesn’t matter what type of dog it is. Baxter’s jaws here are connected in the back just like mine, he cannot hinge them, he can’t grab you with the front and chew you with the back. It’s a myth and that’s all it is.


Does a Pit Bull jaw lock?

According to  Dr. I. Lehr Brisbin, Ph.D., senior research scientist at the University of Georgia and an expert in training, handling, behavior, and the anatomy of bull dog breeds, “The few studies which have been conducted of the structure of the skulls, mandibles, and teeth of [American Pit Bull Terriers] show that, in proportion to their size, their jaw structure and thus its inferred functional morphology, is no different than that of any [other] breed of dog. There is absolutely no evidence for the existence of any kind of ‘locking mechanism’ unique to the structure of the jaw and/or teeth of the American Pit Bull Terrier.”

Do pit bulls have more pressure when they bite?

According to the same Dr. Brisbin, “To the best of our knowledge, there are no published scientific studies that would allow any meaningful comparison to be made of the biting power of various breeds of dogs. All figures describing biting power in such terms can be traced to unfounded rumor.”

PFPB is a 501(c)3 not-for-profit organization whose mission is to educate people about the history, temperament, and plight of the pit bull-type dog; raising awareness to rally against Breed Specific Legislation (BSL) and Breed Discriminatory Laws (BDL). PFPB’s goal is to restore the image of the pit bull-type dog to its former reputation of America’s companion animal, war hero, and family member.