Throughout the past few decades, reporters, politicians, attorneys, physicians, and others have made claims that pit bulls have the bite force ranging from 1200 pounds per square inch to 1800 psi and up to 2600 psi. Studies and research finds these claims to completely flawed.
In 2005, Dr. Brady Barr of the National Geographic performed a bite force study that included domestic dogs. He used a German Shepherd, Rottweiler, and an American Pit Bull Terrier. A bite sleeve equipped with a specialized computer instrument was used to measure and record the results. Out of the three dogs, the American Pit Bull had the least psi.
Overall, the average psi of all domestic dogs is between 200-450 psi. However it should be noted that depending on the motivation to bite and how hard the animal chooses to bite, the psi will vary and it is hard to tell the full force of an animals’ bite.
- Humans: 120 pounds of bite pressure
- Wild Dogs: 310 lbs
- Domestic dogs: 320 lbs
- Lions: 600 lbs
- White sharks: 600 lbs
- Hyenas: 1000 lbs
- Snapping turtles: 1000 lbs
- Crocodiles: 2500 lbs