38 of the World's Most Dangerous Dog Breeds You Need to Know

1. Caucasian Shepherd

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The Caucasian Shepherd (Caucasian Ovcharka) is an imposing guardian that can reach 200 pounds. Such mass alone can intimidate inexperienced handlers. Properly led, it becomes a steady, loyal protector. Males typically live 10-12 years. Originating in Russia and nearby regions, it was developed to guard flocks and ward off predators. Its courage and confidence serve that role, but without early socialization and firm, fair training, defensive instincts may turn into dangerous aggression.