Musk Ox
Musk ox At a Glance
| Scientific Name | Ovibos moschatus |
| Population | Estimated 80,000–125,000 globally |
| Regions | Arctic tundra of North America and Greenland |
| Destinations | Greenland (Kangerlussuaq, Disko Bay, Ilulissat, Nuup Kangerlua), Canada, Norway |
| Average Length | Males: 2.0–2.5 m / 6.6-8.2 ft; Females: 1.9–2.1 m / 6.2-6.9 ft |
| Average Weight | Males: 350–450 kg / 772-993 lbs; Females: 200–300 kg / 441-661 lbs |
| Diet Habits | Grasses, Arctic willows, mosses, lichens, and woody plants |
Did You Know
The fine underwool of the musk ox is called qiviut. It is roughly eight times warmer than sheep’s wool and one of the rarest natural fibers in the world, harvested without harming the animal.
Field Notes: Behavior & Biology
What does a musk ox look like?
Musk oxen are stocky and built low to the ground, which helps conserve heat in extreme cold. The coat is what you notice first: a dense outer layer of long, coarse guard hairs that can reach 70 cm ~27 in) in length, hanging like a skirt almost to the ground. Beneath it is the qiviut underlayer that does the real insulating work. Adults are dark brown, often with a lighter saddle patch on the back. Both sexes carry horns that sweep downward from a broad central boss before curving up at the tips, though the boss is more pronounced in bulls.
Where do they live?
Musk oxen are tundra animals, requiring cold, dry conditions with low snowfall. Their original range was the high Arctic of North America, and they gradually pushed northward into Greenland. Today the largest single population, estimated at 10,000 to 25,000 individuals, is centered around Kangerlussuaq in west Greenland, where the semi-arid interior provides ideal conditions. Smaller populations exist around Disko Bay and Nuup Kangerlua. A herd was introduced to Svalbard in 1929 but died out by 1983. West Greenland and Norway support smaller groups, though the milder winters there make conditions less suitable.
How have musk oxen adapted to Arctic conditions?
The musk ox’s most visible adaptation is the coat. Guard hairs up to 70 cm long block wind and moisture. Beneath them, the qiviut undercoat does the actual insulating work, trapping warm air against the body in temperatures that would be fatal for most large mammals. The compact, low-slung body reduces the surface area exposed to cold air, which helps too.
Musk oxen also move slowly and conserve energy through every season. In winter, when snow buries the grasses they prefer, they shift to bare twigs and woody plant material. A long intestinal tract lets them extract enough nutrition from this low-quality feed to survive until the season turns. They do not migrate or hibernate. They simply wait the winter out.
What do they eat?
How do musk ox defend themselves?
Are they endangered?
Where does the name "musk ox" come from?
What do you call this animal?
| English | Musk ox |
| Danish | Moskusokse |
| Chinese | 麝牛 (Shèniú) |
| Swedish | Myskoxe |
| Finnish | Myskihärkä |
| Norwegian | Moskusfe |
| Polish | Wołek piżmowy |
| Japanese | ジャコウウシ (Jakō ushi) |
| Spanish | Buey almizclero |
| French | Bœuf musqué |
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