Tibetan Mastiff breeds

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Sporting Group 33
Hound Group 33
Working Group 32
Terrier Group 32
Toy Group 22
Non-Sporting Group 20
Herding Group 33

#	Breed	AKC group	Size	Weight	Lifespan
142	Tibetan MastiffThe Tibetan Mastiff is a large, thickly coated guardian from the Himalayan region, aloof with strangers, independent and at its most active at night.	Working Group	Large	70 to 150 lb	10 to 14 years

Ranked by the American Kennel Club's 2025 registration popularity. The three breeds it recognized in January 2026 follow. Weights are typical adult ranges; sizes are this site's classes: small under 25 lb, medium 25 to 60 lb, large over 60 lb.