AnAge entry for Bos grunniens

Classification (HAGRID: 02359)

Taxonomy
Kingdom: Animalia
    Phylum: Chordata
        Class: Mammalia (Taxon entry)
            Order: Artiodactyla
                Family: Bovidae
                    Genus: Bos
Species
Bos grunniens
Common name
Yak

Lifespan, ageing, and relevant traits

Maximum longevity
26.3 years (captivity)
Source
ref. 671
Sample size
Large
Data quality
High
Observations

The yak reaches full size in 6-8 years. In the wild, these animals have been estimated to live up to 25 years [0434]. One captive specimen was still living after 26.3 years [0671].

Life history traits (averages)

Female sexual maturity
738 days
Male sexual maturity
738 days
Gestation
274 days
Weaning
228 days
Litter size
1 (viviparous)
Litters per year
0.8
Inter-litter interval
Weight at birth
18,000 g
Weight at weaning
Adult weight
667,000 g
Postnatal growth rate
Maximum longevity residual
69%

Metabolism

Typical body temperature
311ºK or 38.0ºC or 100.4ºF
Basal metabolic rate
Not yet available

References

External Resources

Integrated Taxonomic Information System
ITIS 183840
Animal Diversity Web
ADW account
Encyclopaedia of Life
Search EOL
NCBI Taxonomy
Taxonomy ID 30521
Entrez
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Ageing Literature
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Images
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Internet
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