What breed of hound is suitable for mountainous areas?

Tibetan mastiff is called "Tibetan Mastiff", and its coat color is mainly iron, gold, yellow and black. Tall, strong-boned, well-proportioned, muscular and quick-moving, it is a large and fierce dog breed. Tibetan mastiffs are produced in the cold zone of 3000-5000 meters on the Qinghai-Tibet Plateau in China. The harsh climatic conditions and harsh living environment have created the strong physical characteristics of Tibetan mastiffs and the courage and loyalty of a group of majestic animals. They are regarded as guardian dogs and protectors by Tibetans and have the title of "Tiangou". In recent years, due to the special living environment of grassland and the weak consciousness of herdsmen's bloodline protection, the original Tibetan mastiff has merged with local sheepdogs and even foreign breeds, resulting in fewer and fewer purebred tibetan mastiff; So the standard purebred tibetan mastiff is one in a thousand in Qinghai-Tibet now.