Arctic Wolf

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Main article: Gray Wolf
Arctic Wolf

Conservation status
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Carnivora
Family: Canidae
Genus: Canis
Species: C. lupus
Subspecies: C. l. arctos
Trinomial name
Canis lupus arctos
Pocock, 1935
Arctic Wolf ranges
Arctic Wolf ranges

The Arctic Wolf (Canis lupus arctos), also called Polar Wolf or White Wolf, is a mammal of the Canidae family, and a subspecies of the Gray Wolf. Arctic Wolves inhabit the Canadian Arctic and the northern parts of Greenland.

Contents

[edit] Anatomy

See also: Gray Wolf behavior and physiology

Arctic Wolves generally are smaller than Gray Wolves, being about 3 to 6 feet (0.9 to 1.8 m) long including the tail; males are larger than females. Their shoulder heights vary from 25 to 31 inches (63 to 79 cm); Arctic Wolves are bulkier than Gray Wolves, often weighing over 100 pounds (45 kg). Weights of up to 175 pounds (80 kg) have been observed in full-grown males. Arctic Wolves usually have small ears, which help the wolf maintain body heat.

Arctic Wolves have achieved life spans of over 18 years in captivity; however, in the wild, the average lifespan is only 7-10 years.

[edit] Hunting

Arctic wolves, like all wolves, hunt in packs; they mostly prey on Caribou and musk oxen, but will also kill a number of Arctic Hares, seals, ptarmigan and lemmings, as well as other smaller animals. Moose are also common prey; their long legs may render them slow and, at times, stuck, in thick snow, leaving them vulnerable to attacks by wolf packs. Due to the scarcity of grazing plants, they roam large areas to find prey up to and beyond 2600 km² (1000 square miles), and they will follow migrating caribou south during the winter. Recent footage filmed by a BBC Wildlife documentary crew shows arctic wolves hunting waterfowl.[1]

[edit] Reproduction

See also: Gray Wolf reproductive physiology and life cycle

Normally, only the alpha male and female breed, but in large packs others may mate as well. Due to the Arctic's permafrost soil and the difficulty it poses for digging dens, Arctic Wolves often use rock outcroppings, caves or even shallow depressions as dens instead; the mother gives birth to two or three pups in late May to early June, about a month later than Gray Wolves. It is generally thought that the lower number of pups compared to the average of 4 to 5 among Gray Wolves is due to the scarcity of prey in the Arctic. They give birth in about 63 days. The wolf pups stay with their mother for 2 years.

[edit] Distribution

The Arctic Wolf is the only subspecies of the Gray Wolf that still can be found over the whole of its original range, largely because, in their natural habitat, they rarely encounter humans. But their population is slowly declining due to hunting and shooting for sport (from an aerial craft).

A pack of Arctic Wolves in Toronto Zoo
A pack of Arctic Wolves in Toronto Zoo

[edit] References

[edit] Notes

  1. ^ Morelle, Rebecca (2009-01-31). Elusive wolves caught on camera. BBC. Retrieved on 2008-01-31.

[edit] External links

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