The 38 Most Dangerous Dog Breeds In The World You Should Know About

12. Canaan Presa dog breed

The Perro de Presa Canario, or Canary Mastiff, was bred for herding and guarding livestock. These dogs are muscular, confident, and have a reputation for intensity. If not properly trained and socialized, they can be aggressive and even dangerous. With a strong, dominant personality, the Presa Canario needs a firm, experienced handler to become a stable companion.