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

28. Nepalese Mastiff

A giant dog, the Tibetan Mastiff has a medium to long double coat that changes color depending on the temperature. This large, alert dog weighs 90-150 pounds and is a fierce protector of his family. The American Kennel Club calls this breed the "Guardian Dog Supreme" for its quietness at home and territoriality outside. Once the watchdogs of the Himalayas, the Tibetan Mastiff is an independent and assertive dog. They fearlessly use their 24-26 inch frame to confront perceived threats. This hunting dog's baritone bark, intimidating weight, and incredible agility deter intruders.