Here are the dog breeds with the strongest bites, measured in PSI (Pounds per Square Inch): Kangal Shepherd Dog (743 PSI): Known as the most powerful, they have the highest recorded bite force of all canine breeds. Bandog (730 PSI): A strong guardian breed known for its protective nature. Cane Corso (700 PSI): An Italian mastiff type used for guarding, boasting incredible jaw pressure. English Mastiff (556 PSI): Known for their massive size and, consequently, high bite force. Tosa Inu (556 PSI): A large, powerful, and rarely seen Japanese dog breed. Dogue de Bordeaux (556 PSI): French mastiffs with very strong, broad jaws. Presa Canario (540 PSI): A large, muscular, and territorial Spanish breed. Dogo Argentino (500 PSI): A powerful white dog bred for hunting. Wolfdog (406 PSI): A hybrid, often inheriting strong, wild-type jaw pressure. Rottweiler (317-328 PSI): A popular working dog with substantial, crushing power. American Bulldog (305 PSI): A stocky, strong, and active breed. German Shepherd (238 PSI): A versatile working dog, often utilized in protection. American Pit Bull Terrier (235 PSI): Known for being tenacious, with a high bite force relative to their size. Factors Influencing Bite Force Purpose: Many of these breeds were developed for guarding livestock, hunting large game, or protection, requiring immense, bone-crushing strength. Size and Structure: Larger, mastiff-type dogs with broad heads and strong muscles generally have higher PSI. PSI vs. Aggression: A high bite force does not necessarily mean a dog is aggressive; many of these, including the Kangal, are known for being gentle with their families.