Being a dog of large size, male Tibetan Mastiffs can weigh between ninety and one hundred fifty pounds, while females are slightly lighter at seventy to one hundred twenty pounds. Since they can grow incredibly tall, the breed standard recognizes a minimum of twenty-six inches for males and twenty-four for bitches. The body frame is longer than its height, with thick bones and dense musculature. See our Tibetan Mastiff growth chart for more information. Brow bones are pronounced and are almost perpendicular to the stop, which connects to a muzzle of medium length and square shape at an angle slightly higher than ninety degrees. The skull is wide and massive with a flat back. The Tibetan Mastiff must have slightly slanted, deeply set eyes of brown color (shade not important). Ears shaped like the letter V should be moderately big without large gaps between them and the skull. They should also tilt forward. A neck that is muscular and arched should be moderately long to match the rest of the body. A thick mane is a breed trait that should be fully developed in adult males. The chest is broad and reaches under the elbows. There should be a visible but not eye-piercing tuck at the inside of the hips without creating disproportion with the strong musculature of the back. A straight back continues into a medium or long tail that should be abundant in feathering and curled over the back. Both shoulders and hindquarters are muscular and perpendicularly set to the thick leg bones. Dewclaws can be removed or left, but one on the front and one or two on the back feet are standard.