A RED Tibetan Mastiff puppy has become the worlds most expensive dog after being sold for almost 1 million. Tibetan Mastiffs are huge and fierce guard dogs that have stood watch over nomad camps and monasteries on the Tibetan plateau for centuries. They are thought to be one of the worlds oldest breeds, and legend has it that both Genghis Khan and Lord Buddha kept them. More recently, however, they have become highly-prized status symbols for Chinas new rich. The dogs are thought to be a pure Chinese breed and they are rarely found outside Tibet, giving them an exclusivity that other breeds cannot match. Accordingly, prices have risen from around 5,000 yuan a puppy five years ago to the hundreds of thousands and even millions. Big Splash, or Hong Dong in Chinese, is 11-months-old but already stands nearly three-feet-high at the shoulder and weighs more than 180lbs, according to his breeder, Lu Liang. TG