VU

Bos mutus

Declining

Overview

Wild Yak (Bos mutus)

The wild yak is a massive bovid distinguished by its dense, shaggy coat and impressive curved horns. Bulls can reach shoulder heights of 2 meters and weigh up to 1,000 kilograms, while females are considerably smaller. Their thick, dark fur provides insulation against extreme cold, and their large lungs and heart enable survival at high altitudes.

Wild yaks are highly social, forming herds that migrate seasonally across vast distances. As grazers, they play a crucial role in maintaining alpine grassland ecosystems and serve as prey for snow leopards and wolves.

Wild yaks inhabit the high-altitude plateaus and mountains of Central Asia, primarily the Tibetan Plateau and surrounding ranges. They occupy alpine grasslands, steppes, and cold deserts between 3,000-5,500 meters elevation across China, Mongolia, India, Nepal, Bhutan, Kazakhstan, and Russia.

The species faces multiple interconnected threats. Hybridization with domestic yaks poses a significant genetic threat, potentially diluting the wild gene pool. Competition with livestock for grazing areas has intensified as pastoral activities expand into yak habitat. Hunting pressure persists despite legal protection, driven by demand for meat and traditional medicine. Climate change is altering vegetation patterns and potentially reducing suitable habitat.

Conservation efforts include protected area establishment across the species' range, anti-poaching patrols, and community-based conservation programs involving local herders. China has implemented strict hunting regulations and habitat protection measures on the Tibetan Plateau.

The wild yak population continues declining despite conservation measures. Habitat fragmentation and ongoing hybridization with domestic animals remain persistent challenges, suggesting the species will likely face continued pressure without intensified conservation intervention.

Wild yaks face pressure from domestic livestock grazing in their territory, illegal hunting for their meat and valuable parts, and diseases spread from domestic animals. They are also threatened by crossbreeding with domestic yaks, which dilutes their pure genetic makeup. These threats appear to be ongoing and stable rather than clearly increasing or decreasing.

Threat summary

Habitat

Grassland· majorDesert· major

Conservation measures underway

Site/area protectionLegislation

Frequently asked questions

Why is Bos mutus classified as Vulnerable?
Bos mutus is classified as Vulnerable because the population is declining and the species faces a high risk of extinction in the medium-term future if current pressures continue. Wild yaks face pressure from domestic livestock grazing in their territory, illegal hunting for their meat and valuable parts, and diseases spread from domestic animals. They are also threatened by crossbreeding with domestic yaks, which dilutes their pure genetic makeup. These threats appear to be ongoing and stable rather than clearly increasing or decreasing.
Where does Bos mutus live?
Bos mutus occurs in Bhutan, China, India, Kazakhstan, Mongolia, and Nepal (plus 1 other countries). Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Bos mutus?
The main threats to Bos mutus are 2.3, 5.1, 8.2, and 8.3. The full IUCN-classified threat record for this species is detailed on the species page.

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