The Tibetan Mastiff is the breed you will never mix up with another breed?
#1 Tibetan mastiff was bred in mountains of Tibet
#2 Tibetan mastiffs have been known since ancient times
#3 Tibetan Mastiffs were purebred for a long time
#4 Mastiff is an ancient breed but these dogs arrived to Europe only in the 19th century

The first Mastiff dog was presented as a gift to the Queen of England.