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Top 10 Fascinating Facts About The Arctic Fox

The Arctic fox, Vulpes lagopus, is a small fox also known as the white fox, polar fox, or snow fox. It belongs to the Canidae family. It is native to the Arctic regions of the Northern Hemisphere and can be found across the Arctic tundra ecosystem. The Arctic fox is well-adapted to frigid environments, and its thick, insulating fur, which also helps it blend in, is what makes it famous.

It has a large tail that is covered in fluff. Most humans do not survive their first year in the wild, although others have lasted as long as 11 years. An Arctic fox’s body length ranges between 46 and 68 cm, and it has a spherical form to keep body heat in.

1. Arctic foxes must endure a temperature difference of up to 90–100 Â°C

Iceland-1979445.jpg, CC0, via Wikimedia Commons

Arctic foxes have to deal with a big difference between the temperature outside and the temperature inside their bodies, which can be up to 90-100 °C (160-180 °F). They curl up tight to keep from losing heat, tucking their legs and heads under their bodies and behind their furry tails. This position makes them take up less space and covers the parts that aren’t as well protected.

Arctic foxes also try to get out of the wind and stay warm by hiding in their dens. Even though they are busy all year and don’t sleep, they try to save energy by moving less. In the fall, they store up fat and sometimes gain over 50% of their body weight. This extra fat keeps the animal warmer in the winter and gives it energy when food is short.

2. The arctic foxes reproduce in the spring

Arctic Fox 1997-08-05.jpg , , via Wikimedia Commons

In the spring, Arctic foxes start to think about having babies and finding a good place for them to live. They usually live in big dens that are on slightly raised, frost-free ground. These dens are complex networks of tubes that can cover up to 1,000 m2 (11,000 sq ft) of land. They are often found in eskers, which are long ridges of sedimentary material that form in places that used to be covered by ice. These dens can last for many years, and foxes from different families live in them.

Arctic foxes usually choose dens that are easy to get into, have more than one opening, and don’t have snow or ice on them. This makes it easier for them to dig. They like dens that face south so they can get warm from the sun. They also like big, complicated dens with maze-like structures that protect them better from enemies and let them get away quickly, especially when there are red foxes around.

Arctic foxes usually have their young between April and May, and the pregnancy lasts about 52 days. The biggest litter size of all animals is 25 pups, which is possible when there is a lot of food available. When they are 3 to 4 weeks old, the young come out of the den, and by the time they are 9 weeks old, they have stopped eating milk.

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3. Arctic foxes generally eat any small animal they can find

Arctic foxes usually eat any small animal they can find, such as lemmings, voles, other mice, hares, birds, eggs, fish, and dead animals. They eat the dead animals that bigger hunters like wolves and polar bears leave behind. When food is scarce, they also eat their faeces. Lemmings are their most common food in places where they live, and a family of foxes can eat dozens of lemmings every day. In some parts of northern Canada, a large number of birds that migrate through the area and live there may be an important food source.

Most of what they eat on the coasts of Iceland and other islands are birds. The Arctic fox also eats ringed seal pups in April and May, when the young animals are stuck in a snow den and not very strong. They also eat berries and seaweed, so you could say they are omnivores. This fox eats a lot of bird eggs, except for the eggs of the biggest kinds of tundra birds.

4. Arctic foxes are adapted to survive extreme winters and hunger

Arctic fox .jpg , Public domain, via Wikimedia Commons

Arctic foxes get through hard winters and lack of food by saving food or putting fat under their skin and in their organs. At the start of winter, a single Arctic fox has enough fat to store about 14740 kJ of energy. Using the lowest BMR value found in Arctic foxes, a 3.5 kg (7.7 lb) average-sized fox would need 471 kJ/day to stay alive in the winter. In Canada, Arctic foxes get between 2.7 and 7.3 snow goose eggs per hour and store 80–97% of them.

Scats show that they eat the eggs in the winter after they have cached. Isotope research shows that eggs can still be eaten after a year. A goose egg that has been kept for 60 days loses only 11% of its energy that can be used by the body. A new egg has about 816 kJ of energy. Eggs that were saved during the summer are taken out in the spring before mating.

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5. The Arctic fox lives in some of the most frigid extremes on the planet

The Arctic fox lives in some of the coldest regions on the planet, but they don’t start shivering until the temperature dips below 70 degrees Celsius (94 degrees Fahrenheit). It has learned to survive in the cold by having thick, multi-layered fur. Furthermore, the Arctic fox is the only canid that has hairy pads on its feet.

There are two coat colors that result from separate genes: white and blue. The white morph’s appearance shifts with the seasons. It is white in the winter and brown along the back and light grey across the belly in the summer.

The blue form is frequently dark blue, brown, or grey throughout the year. Despite the fact that the blue allele is more prevalent than the white allele, the white morph accounts for 99% of the Arctic fox population.

The blue color and the lack of seasonal color variation are produced by two identical mutations in MC1R. Because of its fur, the Arctic fox has the best protection of any mammal.

The fox has a low surface area to volume ratio, as seen by its small head, short legs, and short, thick ears. Because less of its body is exposed to the Arctic cold, it loses less heat.

6. The Arctic fox has less hearing ability than a dog

The Arctic fox has a hearing range of 125 Hz to 16 kHz, with an average sensitivity of 60 dB in air and a peak sensitivity of 24 dB at 4 kHz. Overall, an Arctic fox’s hearing is inferior to that of a dog or a kit fox.

In comparison to domestic dogs and other animals, Arctic foxes and kit foxes have a low limit on how frequently they can feed. The Arctic fox can easily hear lemmings digging holes under 4-5 inches of snow. When it discovers food, it leaps at it and punches through the snow to get it.

The Arctic fox has a keen sense of smell. They can detect the dead animals that polar bears frequently leave behind from up to 40 kilometers distant. They may also use their sense of smell to locate polar bears.

Arctic foxes can also detect frozen lemmings under 46-77 cm of snow. Under 150 cm of snow, they can also find a subnivean seal lair.

7. Arctic foxes are considered small to medium-sized animals

Canidae Vulpes lagopus 6.jpg , , via Wikimedia Commons

A male’s head-and-body length is 55 cm on average, but it can range from 46 to 68 cm. A female’s head-and-body length is 52 cm on average, but it can range from 41 to 55 cm. Men and women are the same size in various places of the world. Tails are roughly 30 centimeters long for both men and women.

Shoulder height ranges between 25 and 30 cm. Males weigh 3.5 kg on average and can range from 3.2 to 9.4 kg. Females weigh 2.9 kg on average and can range from 1.4 to 3.2 kg.

8. The arctic fox is said to have existed in the Pleistocene Epoch

The “out of Tibet” argument has been used to explain the origins of the Arctic fox. The remains of an extinct predecessor of the Arctic fox from the early Pliocene (5.08-3.6 million years ago) were discovered on the Tibetan Plateau, along with numerous other precursors of modern animals that evolved during the Pliocene (5.3-2.6 million years ago). People believe that this elderly fox is the ancestor of today’s Arctic fox.

The Pliocene was 2-3 degrees Celsius warmer than today, and the Arctic was 8 degrees Celsius warmer in the summer during the mid-Pliocene. According to the researchers, stable carbon and oxygen isotope study of fossils shows that during the Pliocene, the Tibetan Plateau was similar to a tundra and was home to cold-adapted mammals that eventually expanded to North America and Eurasia during the Pleistocene Epoch (2.6 million to 11,700 years ago).

9. The Arctic fox has a circumpolar distribution

Arctic fox cub.JPG, , via Wikimedia Commons

The Arctic fox can be found in the Arctic tundra of northern Europe, Asia, and North America. It can be found all the way around the Arctic Circle. Its range includes Greenland, Iceland, Fennoscandia, Svalbard, Jan Mayen, other Barents Sea islands, northern Russia, Bering Sea islands, Alaska, and Canada as far south as Hudson Bay. It arrived in the Aleutian Islands, southwest of Alaska, at the close of the nineteenth century.

However, the population on the Aleutian Islands is being wiped off as part of efforts to safeguard the birds that live there. It primarily inhabits tundra and packs ice, but it may also be found in the Canadian boreal woodlands and Alaska’s Kenai Peninsula. They can dwell at heights of up to 3,000 meters above sea level and have been spotted on sea ice near the North Pole.

10. During the winter, 95.5% of Arctic foxes utilize commuting trips

During the winter, 95.5% of Arctic foxes employ commuting excursions that keep them inside their home range. Arctic foxes go to and from their burrows in fewer than three days, between 0 and 2.9 times every month. 3.4% of foxes are nomads, and 1.1% migrate in a loop, moving to a new location and then returning to their home range.

Arctic foxes in Canada migrate from Canadian islands to Greenland and northeastern Canada. Male and female movement patterns are similar in terms of time and distance.

Arctic foxes are less likely to move if they live near bird groups, which are frequently around the beaches. When there aren’t many lemmings, foxes are more likely to venture out onto the sea ice.

Arctic foxes frequently congregate in the same area to protect it. Every year, migratory foxes outnumber permanent foxes by a factor of three. Foxes tend to move around more as they get older.

In conclusion, the Arctic fox is an amazing species that has evolved to survive in the hard Arctic environment. Its charming white coat, little size, and adaptability allow it to thrive in subfreezing conditions. The Arctic fox is a great example of how nature can be resilient and adaptable in the face of difficulty.