Arctic Fox
This small fox is found in cold northern climates and has many specialized adaptations for surviving in frigid temperatures.
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Carnivora
Family: Canidae
Genus: Vulpes
Species: V. lagopus
Common Names: Arctic Fox, White Fox, Polar Fox, Snow Fox
Arctic foxes are predators, and will eat many different types of small animals, including rodents, Arctic hares, birds, eggs, and fish. They will also scavenge prey left by wolves and bears.
The foxes themselves are prey for eagles, Arctic wolves, polar and grizzly bears, red foxes, and wolverines.
To keep heat from escaping their body, Arctic foxes often sleep in a curled up position, with their legs tucked tightly under the body, and tail wrapped around the head and neck.
Arctic foxes live in dens in slightly raised ground. These dens feature networks of tunnels that can cover several thousand square feet.
Breeding usually happens in late spring, around April or May. Pregnancy lasts about 50 days. The Arctic fox’s litter is the largest of the order Carnivora, and may contain up to 25 pups. They will stay in the den for about a month before emerging.
A small member of the canine family, Arctic foxes grow to about two feet in body length, with the tail adding another foot or so in length. In summer their coats are brown and black, while their winter fur is strikingly white.
They have many adaptations for surviving the cold temperatures of their habitat. Their fur coats are very dense, with many layers to help insulate them. Their footpads are also covered in fur. The fox's small and compact body shape helps to keep heat from escaping the body.
The Arctic fox diverged from its cousin the red fox approximately three million years ago. Its closer relative, the small kit fox, diverged from the Arctic fox a little less than a million years ago.
Currently they are found in the Northern Hemisphere, especially the Arctic Circle, in North America, Scandinavian Europe, and Asia. It is the only living land mammal native to Iceland.
Arctic foxes are a species of Least Concern. In Scandinavia, however, the population is considered Critically Endangered, and may be only a few hundred individual foxes. Historically, Arctic foxes were hunted for their fur. These days, their range is being encroached upon by the red fox, as climate change has led to less snowfall, meaning the camouflage provided by the Arctic fox’s winter coat is less effective.
References
https://en.wikipedia.org/wiki/Arctic_fox
Macdonald, David W. (editor). (2006). The Princeton Encyclopedia of Mammals. Princeton, New Jersey: Princeton University Press.
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Arctic TOOB Set with Arctic Fox Mini Figure