A large Tibetan molosser-type dog, this Mastiff is thought to be ancient. (To give you an idea, the breed is mentioned in writings that date back to 1100BC.)
They are, as you might have guessed, originally from Tibet and mainly bred for guarding property. They’re also known as the ‘Do-Khyi’, translated roughly as ‘tied dog’. This probably stems from the way they were tied to gates as a guard dog during the day and let loose to roam and protect the village at night.
The original lines of pure Tibetan Mastiffs in Tibet are quite rare, and one recently became the world's most expensive dog when it was purchased for 4 million Yuan, in 2009. Protective and very loving, many would say these dogs are invaluable, even without a price tag.