When it comes to powerful dogs, size and muscle aren’t the only indicators of strength—the force of their bite is a major factor. Measured in pounds per square inch (PSI), bite force tells us how much pressure a dog can exert with its jaws. While most dogs have bite forces in the 200–400 PSI range, a few breeds far exceed that. Some are capable of breaking bones, especially in defensive or aggressive situations. Here are 10 dog breeds with bite forces strong enough to cause serious injuries—including bone fractures—based on data from sources like National Geographic, the American Kennel Club (AKC), and various canine research studies.
Kangal
The Kangal, a Turkish livestock guardian breed, holds the crown for the strongest bite among domestic dogs. With a bite force of approximately 743 PSI, according to a study by National Geographic, the Kangal’s jaws are strong enough to crush bone easily. This breed was developed to fend off predators like wolves and bears, and its massive skull and jaw muscles reflect that role.
Cane Corso
This Italian mastiff is not only intimidating in appearance but also in bite strength. Cane Corsos average around 700 PSI, making them one of the most powerful biters in the canine world. Originally bred to hunt wild boar and guard property, their jaw strength makes them capable of breaking through dense materials—including bone.
Dogue de Bordeaux
Also known as the French Mastiff, the Dogue de Bordeaux has a bite force that can reach 556 PSI, according to multiple canine anatomy studies. These dogs have a thick skull and powerful jaw muscles, giving them incredible clamping strength. Their bite, if triggered, can cause serious skeletal injury.
Rottweiler
Rottweilers are known for their loyalty and guarding instinct—but they also possess serious jaw power. Their bite force is measured at around 328 PSI, though anecdotal evidence from veterinarians and emergency responders suggests their true destructive potential may be underestimated. The breed’s natural determination and muscle mass add force behind every bite.
Presa Canario
Originating from the Canary Islands, the Presa Canario was bred as a working dog for guarding livestock and property. This muscular and imposing breed has a bite force estimated between 540–550 PSI, making it one of the most powerful dogs in terms of jaw strength. According to data compiled by canine behavior researchers, the Presa Canario’s strong jaws and determined grip can easily cause deep tissue damage and bone fractures if provoked or improperly trained. While loyal and protective, this breed requires experienced handling due to its strength and guarding instincts.
English Mastiff
Known as gentle giants, English Mastiffs nevertheless have powerful jaws, registering 552 PSI in bite strength tests. While generally docile, the breed’s sheer size—some males weigh over 200 pounds—means any bite, especially a defensive one, can lead to broken bones or severe trauma.
Doberman Pinscher
The Doberman’s bite force is lower than some mastiff breeds—estimated around 305 PSI—but their speed, precision, and tendency to bite multiple times rapidly make them a dangerous force. Dobermans were bred for protection and police work, and their ability to bite and hold can cause compound fractures under the right circumstances.
Dogo Argentino
Originally bred to hunt big game like wild boar and puma, the Dogo Argentino has a bite force that exceeds 500 PSI. Their skull is designed for holding onto large prey, and their muscular bodies only add to the impact. A study published in the Journal of Veterinary Behavior noted their capacity to exert enough pressure to damage bones and ligaments.
Tosa Inu
The Tosa Inu, or Japanese Mastiff, was originally bred for dog fighting. Bite force estimates vary, but most range between 500–600 PSI. Their reputation for focus and grip strength means that, in rare attack scenarios, they can cause deep punctures and bone damage.
Belgian Malinois
While not the strongest on this list in terms of PSI—usually ranging between 195–225 PSI—the Belgian Malinois deserves mention due to how they bite. Known for targeting limbs during apprehension work, they often bite with such speed and ferocity that the impact causes fractures, especially in smaller bones like the wrist or forearm. Many law enforcement departments report broken bones resulting from their bites during suspect takedowns.
- Please Note: This content was created with the assistance of AI and thoroughly edited by a human before publishing.
