Kangals have the most powerful bite, used historically for bear defense and guarding livestock.
Kangal (743 PSI)
Massive mastiffs can exert over 500 PSI of pressure with their large frames and strong jaw muscles.
English Mastiff (556 PSI)
Known for powerful bites, Rottweilers have strong jaws and instincts to hold on when biting down.
Rottweiler (328 PSI)
Despite myths, Pit Bull bites test lower than other security and war breeds when pressure is measured.
American Pit Bull
Used for military and police applications requiring confident biting ability.
German Shepherd (238 PSI)
Some studies suggest Dobermans exert up to 600 PSI by using jaws like scissors when biting.
Giant furry Leonbergers have the bite force necessary to be excellent guardians and family protectors.
Leonberger (399 PSI)