My grandfather said that Tibetan mastiff is a Tibetan dog. Is my grandfather right?

Tibetan mastiff is also called Western Tibetan Mastiff. Originated in Qinghai-Tibet Plateau, China, it is a tall, fierce and drooping dog. It was accompanied by human training 6 years ago. In Tibetan serf-owner society, only those kings and temple directors have the right to raise them, and they are regarded by Tibetans as mounts of god dogs, heavenly dogs and living buddhas. What your grandfather said is right.