Tibetan Mastiff

Pinschers & molossoids

Giant

Median 13.3 y

FCI group 2 · Pinscher and Schnauzer, Molossoid and Swiss Mountain Dogs · Derived from the adult weight midpoint (48.8 kg)

Median survival across 139 UK dogs (VetCompass, McMillan 2024) · half live 10–15 y

The Tibetan Mastiff is a large Tibetan dog breed. Its double coat is medium to long, subject to climate, and found in a wide variety of colors, including solid black, black and tan, various shades of red and bluish-gray, and sometimes with white markings around its neck, chest and legs.

Independent

Reserved

Watchful

Summary from Wikipedia (CC BY-SA) · reference ranges from the Kintail breed dataset

Adult weight

Reference

Male

41–68 kg

Female

32–54 kg

Breed club figure (the American Kennel Club)

Weight for age

Stock data

Male

Female

Expected range

Expected range from the breed's own adult weight, kilograms. Growth reference: Hawthorne et al. 2004, WALTHAM (five giant-breed fits, n=35).

Heat cycles · females

Stock data

First heat

8–12 mo

typical

Interval

180 d

typical

Bleeding

~9 d

typical

Proestrus 9d

Estrus 9d

Diestrus 52d

Anestrus 110d

General figures for dogs, not for this breed — individual cycles vary widely.

Questions people ask

Adult males usually weigh 41–68 kg and females 32–54 kg. Most are close to their full size by around 13 months, though the last little bit of filling out takes longer. Growth reference: Hawthorne et al. 2004, WALTHAM (five giant-breed fits, n=35).

No Tibetan Mastiff cycle figures are published here yet, so this is general guidance rather than a breed number: most females have a first season somewhere between six and fifteen months, and cycles then settle to roughly every 180 days. Smaller breeds tend to start earlier and larger ones later.

The median is 13.3 y. Median survival across 139 UK dogs (VetCompass, McMillan 2024) · half live 10–15 y. How the later years go comes down to weight, teeth, exercise and regular check-ups far more than to the breed.