Not only do male bears have to fight each other for mates, but even when faced with a single woman of their choice, they have to show their love to the opposite sex through fierce fights - battle maniacs, ah no, battle maniacs.

What an aggressive race.

The gestation period of polar bears is 195-265 days, and each litter is usually two, occasionally one, three or four, and the mortality rate of cubs is about 10~30%.

Newborn polar bears are about 30 centimeters long and weigh 700 grams, and at birth they are unassisted, their eyes are closed, but their bodies are covered with soft hair, and at 1-2 months, they can walk.

After 3-4 months of birth, the female bear leaves the hole with her young, let her go out to see the world, grow knowledge, and lead them back to the cave for the night at night, weaned after 4-5 months of birth, and become independent after 2-3 years of age.

During this time, the cubs learn to hunt and survive in the harsh environment of the Arctic. Once they are adults, they rarely find the same kind of companions, and they come in the wind and snow all day long, tossing and turning between the ice floes and the land, due to their special feeding methods and considerable food volume (the stomach of polar bears can hold 50~70 kg of food).

So it's always alone......

Female polar bears do not leave their burrows when their babies are young, they stay in burrows to convert the subcutaneous fat stored in their bodies to produce milk to feed their babies and provide themselves with the nutrients they need.

Both males and females are sexually mature at 5-6 years of age. The lifespan is 25-30 years.

Polar bears are not harmless to humans, but unrestricted hunting and killing can threaten polar bears. The main threats to polar bears are pollution, poaching and disturbance from industrial activities.

While the effects of climate change are uncertain, it is accepted that even mild climate change could have a profound impact on polar bears' sea ice habitat. For example, if the icebergs in the Arctic continue to melt, polar bears may no longer be able to live in burrows, which can affect the survival of polar bears and their cubs.

If the top and walls of the den are not thick enough, the nest may collapse, and the seals will also be killed, reducing the food source for polar bears.

Persistent organic pollutants (POPs) also pose a threat to polar bears. Studies on the accumulation of organochlorine pesticides have shown that polar bears, as apex predators, are at risk of accumulating these compounds in their bodies, including nervous system, reproductive and immune functions.

There are more than 20,000 polar bears living in the wild in the world, and the number is relatively stable.

In order to protect their survival, as early as 1972, the United States enacted a law prohibiting the hunting of polar bears except for survival needs. In 1973, countries in the Arctic Circle, including the United States, Canada, Norway, Denmark and the former Soviet Union, signed an international convention for the protection of polar bears, which not only restricted hunting and trade, but also included provisions for habitat protection and cooperative research.

Polar bears have the same eyesight and hearing as humans, but their sense of smell is seven times that of dogs, and they can run at speeds of up to 60 km/h, 1.5 times that of the world champion in the 100m. Due to the rise in global temperatures, the Arctic ice floes are gradually beginning to melt, and the former home of polar bears has been damaged to a certain extent, and it is likely to become extinct in the near future, requiring human protection.

Others are afraid of polar bears, but Ye Chao is not afraid.

He has a heart magic that can influence and even control polar bears......

He even rode on the polar bear's back, stroking its fur while ordering it to move forward......

In addition to bears in the Arctic, there are actually wolves - Arctic wolves!

The Arctic wolf is a member of the largest wild canine family in the world, with great endurance and good for long-distance migration.

They have a narrow chest and strong backs and legs, which make them very efficient and mobile. They can travel more than a dozen kilometers at about 10 kilometers per hour, can increase their speed to nearly 65 kilometers per hour when chasing prey, and can sprint up to 5 meters per step.

It is a survivor of an ice age, originating about 300,000 years ago in the Late Pleistocene.

But when it comes to implementation, if you want to talk about fighting, the Arctic wolf is far from being an opponent of the powerful polar bear.

Arctic wolves are generally smaller than gray wolves, about 3 to 5 feet long with tails, and adult Arctic wolves are only 3 feet tall; They range in height from 25 to 31 inches at the shoulders, and Arctic wolves typically weigh more than 100 pounds, with a mature male weighing up to 175 pounds.

There was once an Arctic wolf raised by humans to live up to 18 years, but in general, the Arctic wolf in the wild only lived 7 to 10 years.

Like all other wolves, Arctic wolves hunt animals in packs, usually of 5 to 10 individuals, mostly preying on reindeer and musk oxen, but also killing arctic hares, lemmings, moose, fish, walruses and other animals, and sometimes even attacking humans.

They also hunt red deer in winter, where their long legs sink into the snow, making it easy for the Arctic wolf to hunt one of the world's largest terrestrial animals.

Due to the scarcity of vegetation in winter, they roam a large area to hunt, crossing more than 2600 km?, and migrating with reindeer.

Although the Arctic wolf is generally considered to be fierce, to the Eskimos, the Arctic wolf is a very gentle animal.

Excavation is extremely difficult due to the permafrost soil in which the Arctic wolves live, as they are usually replaced by burrows or depressions, and between late May and early June, the female wolves give birth to two to three young wolves, about a month later than the gray wolves.

It is believed that the reason why the number of wolf cubs born to an Arctic wolf is smaller than that of a gray wolf is that the Arctic has less food to hunt. Their wolf cubs stay in their mothers for about 63 days.

The baby wolf follows the female wolf for 2 years after birth, and then it will start to become independent. According to statistics, there are only about 10,000 Arctic wolves in the world, so they are classified as second-class endangered.

Some people think that the Arctic wolf is a beautiful creature, and Ye Chao actually thinks so.

However, in the Arctic, there is another creature that is more beautiful than polar bears and arctic wolves, and that is the arctic fox.

The Arctic fox, also known as the blue fox or white fox, is a very beautiful elf.

Since the fur of the arctic fox is the best-selling high-end commodity in the international fur market, the arctic fox has become a competitive target.

It's tragic......

The arctic fox has a narrow front, a pointed snout, short and round ears, hairs on the back of the cheeks, and dense hairs on the soles of the feet, so it is suitable for walking on ice and snow, and the tail hair is fluffy, the tip is white, and the body is slightly smaller than that of the red fox.

The fur of the arctic fox is long, soft and thick, so the arctic fox can tolerate the cold. In winter, the coat color is pure snow white, only the hairless nose tip and tail end are black, and gradually turns blue-gray from spring to summer, especially called "green fox".

The male arctic fox is about 55 cm long, with a tail length of 31 cm and a weight of 3.8 kg, while the female is 53 cm, 30 cm and 3.1 kg, with a height of 25-30 cm at the shoulder.

The Arctic fox's diet includes lemmings, fish, bird and bird eggs, berries, and sometimes roams the coast to catch shellfish, but the main diet of the arctic fox is lemmings.

When the arctic fox smells the scent of the lemming's nest or hears the screams of the lemmings in the lemming's nest, it will quickly dig into the lemming's nest under the snow, and when it is almost ready, the arctic fox will jump high, use the strength of the leap, crush the lemming's nest with its legs, and then sweep the lemmings in the nest all the lemmings in the nest.

In situations of extreme hunger, arctic foxes will attack themselves.

Arctic foxes are found in the coastal areas of the Arctic Ocean and the tundra of some islands, and can live on ice sheets at minus 50°C. Arctic foxes like to build their nests in hilly terrain, and the arctic fox's nest has several entrances and exits.

When encountering a snowstorm, the arctic fox can stay in the nest for several days without coming out. Every year, the arctic fox makes some repairs and extensions to its nest so that it can live for a long time.

In summer, when food is abundant, the arctic fox stores part of its food in its nest. In winter, when the food stored in the den is depleted, the white fox will stalk the polar bear, picking up the leftovers that the polar bear has eaten.

So in the winter, there are always 2 or 3 white foxes quietly following the polar bear. But when the polar bear is very hungry, it also attacks the arctic fox.

When an arctic fox is attacked by a hungry polar bear, the family that loses the male fox will find another place to live or take refuge with other arctic foxes, and many arctic fox cubs often freeze to death at this time.