A long-coated, herd-living bovine of Arctic tundra.
Long outer hairs cover a fine insulating winter coat. Both sexes have horns that descend beside the head before curving upward.
Muskox numbers reflect a chain linking snowmelt, plant flowering and calving. At Zackenberg in northeast Greenland, a study of 24 years of records (1996–2019) found that shallower summer snow was associated with earlier Arctic willow flowering and higher muskox abundance. The authors note that forage at the start of the May–June calving season matters for reproductive success.
They also warn that the benefit may change if spring advances enough to put plant growth out of step with calving. In the study, half of the Arctic willow flowers had opened by a median date of 23 June ± 7.6 days. This local model traces a climate response through snow, plants and breeding timing, rather than temperature alone.
IUCN Red List · Least Concern (LC) · Global species assessment
The IUCN global assessment classified muskox as Least Concern (LC) in 2020 and recorded a decreasing population trend. It estimated 127,102 mature animals and an 8% global decline over three generations, from about 157,100 in 1998 to 127,102 in 2019. Regional trends differ: numbers on Canada’s Banks and Victoria islands fell sharply between the mid-1990s and 2019, while reintroduced populations in Alaska, Russia and West Greenland increased. On high-Arctic islands, abrupt declines have followed winters with severe icing or late snowmelt. The assessment also identifies climate-related changes in forage, disease and parasites as concerns. Conservation actions recorded include systematic population monitoring, harvest management, protected areas and reintroductions.