Tibetan Mastiffs are large, strong, pure bred dogs.They have a thick, rather long coat, and their hair is hard, straight, and coarse. Black, brown, gray, and different tones of gold are the colors, with or without tan markings. Male height is 26 to 30 inches (66 to 76 cm), while female height is 24 to 28 inches (60 to 71 cm). Women weigh 32 to 54 kgs (70 to 119 pound), while men weigh 40 to 72 kgs (88 to 158 pound), their average lifespan 10 to 15 years. They are territorial, gentle, independent and loyal.
