Does anyone have a tibetan mastiff?

I show them and they are great one person dogs. They're normal puppies but once they hit maturity, they are much more serious and take their job on as guard dogs. They usually on average don't get past 160lbs but proportions are more important in this dog as they don't have as many health problems as say a mastiff or something. They're not as heavy boned as other mastiffs which is in their favor. They're not the most expensive dogs in the world, they're not the rarest either. I know some people that have em. They are quite aloof dogs which is what they were bred to be. They don't need that much space either, they're not hyper active. Food is obviously more expensive. They might eat as little as 4-5 cups a day and as much as 7-9 cups. Totally depends on the dog .