Also called Do-Khyi, the Tibetan Mastiff originally hails from China's Tibet as the name signifies. It was not until the 1970s that the Tibetan Mastiff was imported to other countries like United States, Germany and Switzerland. This particular breed is the originator of many European mastiff breeds.

A Tibetan Mastiff is 24-28 inches tall (at shoulder) and weighs 140-180 pounds. It is typical mastiff type but not as heavy. Their tail is stretched to the back in loose curl. They have a coat of medium length but with a thick undercoat. These dogs also possess a lock around their neck. The Tibetan Mastiff looks best in black, brown or bluish grey with or without tan markings. In Tibet this dog is commonly found wearing a red yak's-hair collar.

Although these are fierce guard dogs, they are very loyal to their master and gentle with children. They are responsive to training and perfect when tamed as pets. These dogs are not long lived and they are also prone to hip dysphasia. Also, for these dogs brushing is an absolute necessity.