10 Most Aggressive Dogs in the World

Tibetan Mastiff

The Tibetan Mastiff is an ancient dog breed that was used by the tribes of the Himachal Pradesh to protect livestock from wolves, bears, and leopards. This means that these dogs were ready and willing to protect their prize no matter the cost. However, if you train your Tibetan Mastiff and set clear boundaries, plus give them lots of exercises, you can reduce the chance of putting yourself in danger with this pup.