Originating in South Africa, Boerboels were bred as farm dogs but possess protective instincts that can make them dangerous if not properly managed.
A Japanese breed, Tosa Inus were originally bred for dog fighting, which has influenced their disposition and potential aggression.
Known for their muscular build, Presa Canarios were bred as guard dogs and require proper socialization to prevent aggression.
With a history as a hunting and guarding breed, Fila Brasileiros can display territorial aggression if not properly trained.
Caucasian Shepherds were bred to guard livestock and can exhibit aggressive behaviors towards unfamiliar people and animals.
Originally bred for big-game hunting, Dogo Argentinos have a strong prey drive that can lead to aggression if not trained properly.
Also known as the Central Asian Shepherd, Alabais have protective instincts and can be wary of strangers.
Originating in South Asia, Bully Kuttas were bred for guarding and fighting, which can lead to aggressive tendencies.
A crossbreed between various mastiffs and bulldogs, American Bandogges have protective instincts and require early socialization.
While they can be loyal family dogs, Cane Corsos have a strong guarding instinct and may exhibit aggression if not properly trained and socialized.