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Tibetan Mastiff

Tibetan Mastiff genetic profile from the CanVAS Atlas. 35 dogs in the Atlas, heterozygosity 0.35. Nearest relatives, trait loci frequencies, cohort distribution.

What the atlas says about Tibetan Mastiff

In the atlas, the Tibetan Mastiff clusters consistently as Tibetan Mastiff (100% of the 35 dogs here). Genetic diversity is high (mean heterozygosity 0.3502), reflecting either a mixed-breed cluster or breeds with broad genetic backgrounds. At the trait loci, MSRB3 runs lower than average (45% here vs 80%); STC2 runs lower than average (43% here vs 74%).

Ranks 88 of 107 on the bottleneck severity scale, in the upper quartile of genetic diversity. Mean heterozygosity is 0.350, notably high, indicates broad genetic background.

Closest genetic neighbors in the atlas: Eurasier, Tibetan Spaniel, village dog Nepal, Mongolian Dog, and Gray Wolf.

Median lifespan is 13.0 years, about 1.8 years longer than a typical dog of 48.75 kg, an unusually positive longevity for this size.

Genetic dimensions · CanVAS atlas

What the genome says about Tibetan Mastiff

Computed from the 14,478 research dogs in the Atlas. Methods: technical methodology.

Dogs in the Atlas
35Founders
15 from Chen, 15 from Spatola, 4 from Parker
Genetic diversity
0.35Diverse
Mean heterozygosity across the breed. Ranks 88th most genetically tight of 107 ranked breeds.
Cluster structure
Splits into two genetic sub-populations
Intra-breed RMS distance: 36.06 · likely working/show-line, regional, or kennel lineage split.
Nearest genetic relatives
  1. Eurasier14.98
  2. Tibetan Spaniel15.37
  3. Village Dog Nepal16.18
  4. Mongolian Dog16.30
  5. Gray Wolf16.59
Top-10 PC corrected Euclidean. Lower = closer.
Trait genetics
Allele frequencies at named morphology loci

Frequency of the alternate allele in this breed at each locus's representative SNP. Methods + caveats in technical methodology.

Body size
IGF164%
HMGA246%
SMAD269%
LCORL93%
STC243%
ADAMTS1750%
Leg length
FGF4·CFA1860%
FGF4·CFA1283%
Coat
RSPO246%
FGF586%
KRT7199%
MC1R69%
Ear set
MSRB345%
Skull shape
BMP373%
SMOC253%
Add your Tibetan Mastiff to the Atlas

You can add your Tibetan Mastiff right now at /add/ as a Charted star. Or, if you'd rather wait for DNA uploads, leave your email and we'll let you know the moment those open.

Last updated
Sources: CanVAS (Brundage 2026) · CanVAS dimensions data