The Tibetan Mastiff is one of the oldest and largest dog breeds in the world. It is believed to have originated in the high-altitude regions of Tibet, where it was used to guard livestock and homes from predators. Tibetan Mastiffs are known for their massive size, thick fur, and fierce loyalty. Appearance Tibetan Mastiffs are massive dogs, with males typically weighing … [Read more...] about Tibetan Mastiff: The world’s largest dog