The new status symbol: the most expensive dog in he world - "Big Splash," a Tibetan Mastiff, sold for $1,500,000. Genghis Khan and Buddha loved these dogs; they grow to approx. 3ft tall and upwards of 250 lbs! Red is considered a lucky color in Chinese culture and Tibetan Mastiffs are thought to be holy animals, bringing riches and good health to their owners. The black ones look life NewFoundlands to me.