0
Polar Bears
Known scientifically as Ursus Maritimus, the polar bear is native to the Arctic Circle, and is the world's largest carnivore species found on land. It is classified as a vulnerable species, with 5 of the`9 polar bear subpopulations in decline. They have a reputation as the only animal that actively hunts humans, but in fact, anything they encounter is potential prey.
1,835 Questions
Do polar bears have recessive traits?
They probably do but it's really hard to say, since there are not enough bears around and they're a bit difficult to keep track of for biologists and geneticists to know if there are recessive traits in polar bears or not.
Yes, polar bears are generally very dangerous. When humans maintain a good distance they are not a problem, but coming anywhere near the bear, its den, its food, etc., is hazardous. Polar bears are similar in some ways to the grizzly bear (they even interbreed sometimes), which is also quite dangerous when approached.
How much do polar bears weigh in kgs and pds?
A Polar Bear adult males weigh on average, between 352-680 kg or 780-1500 pounds. They measure 2.4-3.0 meters, or 7.9-9.8 feet in length. While the adult females are usually about half the size of their male counterparts, and weigh on average 150-249 kg, or 330-550 pounds, and measure 1.8-2.4 meters, or 5.9-7.9 feet in length. But, when a female is pregnant, they may increase their weight to 499 kg, or 1100 pounds. The Polar Bear is considered the largest carnivore living on land. They are twice the size of the Siberian Tiger, and the Polar Bear shares the title of the largest predator with the Kodiak Bear, an omnivore brown bear that lives in Alaska. The largest Polar Bear on record had been reported to weigh 1002 kg, or 2210 pounds. It was a male shot in Northwestern Alaska in 1960.
Why do polar bodies form during oogenesis?
When an ovum is initially formed by the normal process of cell division, it is diploid. In order to become a gamete that can engage in sexual reproduction, it needs to become haploid. In order to do that it has to rid itself of half of its genetic material, which it does by ejecting it in the form of a polar body. Note that it is not feasible for the ovum to simply become two ova, because that would give you half sized ova, and reproduction works better with a full sized ovum.
Do polar bears belong to the bear family?
No. Koalas are not bears, but marsupials. It is incorrect to refer to them as "koala bears".
Are heavier polar bears better swimmers?
Yes because they have a denser coat and that means they can float better
What is the life cycle of a polar bear?
A polar bear is born as a cub, deaf and blind, in a snow den built by its mother. Usually it is born with a sibling or two. The cub stays with its mom for several months, growing on its mother's milk, until it gets too crowded in the den. The mother bear then digs her way out of the den, encourages the cubs to come out, and makes a long journey from in-land to the sea ice. Once there the mother bear teaches her cubs how to hunt (and behave), bringing them fresh kills to chew on and play around with when they're old enough.
After a year or so, the cubs have grown enough to be less reliant on their mother for milk, protection and sustenance, and are weaned. From there, the young bears go off on their own, learning and surviving their way through life, learning more hunting skills as they grow older and more wiser.
A female bear (or sow) is ready to breed by the time she's around 2 to 3 years old, where a male bear (or boar) will court her for several weeks, mating multiple times with her and defending her or breeding rights for her against other roving males. Once she goes out of heat, the boar and sow go their separate ways. The gestation period of a sow bear is 8 months, with the last month or less being spent in a snow den made for herself, which is where she gives birth to her cubs and nurses them for the next few months, going into hibernation during that time. Female bears give birth to cubs once every couple years, and will continue to do so until they're around 20 to 30 years of age.
Boars never hibernate during their lifetime. They spend their time out on the sea ice in winter hunting seals, walruses and even whales, and go in-land during the summer where they go into period where they can't really eat much during this time, though they will make opportunities whenever possible, but always waiting during the short summer months for the return of the sea ice. The sows also follow this same period, sometimes and not at all uncommonly spending such a hunger period with her older cubs.
Bears eventually die of old age, but can also die of starvation, drowning in the ocean they depend on, or injuries sustained from fighting other bears or being impaled by a walrus's tusk. Cubs also have a high chance of mortality if they come in contact with a boar, no matter if it's their own father or not.
how is a ploar bear life cycle
Appearance: An polar bear's apppearance is usually in height (Adult male) 8.5 feet (26m.) Female 6.5 feet (2m.) and on it's length (counting the tail) is10.65feet long.Their feet are 0.4 - 0.6 feet long and on it's feet are soles so they wont slip. It's 11400 pounds, but a polar bear's baby is an pound less. By Spring each cub will be about as big as an puppy. Then one year later the cubs will be big as their mother.Also polar bears turn white in the winter and yellow in the summer, but it's skin is black.
Habitat: Polar bears naturally live in the Arctic tundra, East Green land, Northern Alaska, Northern Siberia, and Canada.
Food:Polar bears eat Ringed seals, Whales, Musk ox, Raindeers, Warlus, Fresh fish, Arctic foxes, and gulls. But in the summer they eat moss, berrys, and leaves.
Enemies:Enemies of an polar bear is, People, Walrus, and other polar bears. But a Polar bears most worst enemy is the Killer Whale.
Life cycle:A baby Polar bear's life starts at January~Febuary. During that the female polar bear gets ready for the babies den. During Autumn and Winter the female never goes to the ocean or out side. Then the female will have her babys, it will have 1~4 youngs in 9 monthes. But because of that, the female Polar bear will lose 500~700 pounds. The cubs stay with it's mother for 2 years.Then in an few weeks the cubs can see, walk, and play.
Other facts:The Polar bear is called in some names, ones Nanook, some times sea bear, but it's scientific name is long like Thacarctos-Maritimus,and its familys name is Urisdae. Polar bears are really good swimmers, they're the fastest 4 legged swimmer. And they can swim under water for 2~5 mins.They can live 25~30 years.They have great sense of smell, they can smell food from miles away!
They eat fishes and almost every polar bears live until 24~25 years
- A cub
- An adult
25 to 30 years
How many times a day do polar bears go swimming?
polar bears go out swimming at least 3 t 5 times a day , depends on the food they catch every swimming time ....
Orcas are known to occasionally kill and eat swimming polar bears.
What affect does heat have on the environment?
heat has a big affect on the environment because Global warming, polar bears, arctic, and much more, we need to STOP this!
How does a polar bears shelter look?
A female Polar Bears den looks like a little Cave and because a female polar bear has babies she has her babies in it.
You could have bowel cancer, so you should really go to your doctor and get it checked out.
Are there polar bears in Polar Bear Provincial Park?
no they are no polar bears in the provincial park !
Does the cold affect polar bear cubs?
No, the cold does not affect polar bear cubs because they have the same percent of body fat as an adult would need.
How does the puppet bear in the big blue house work?
Well... I dont know exactly but you can see for your selve that the arms move synchronous... the arms are atached to eachother by a thin brown line..That line goes throug the chest of the bear. There are a few shots that the arms, and hands, move separate from each other. but those shots are not at moments that all his body is in view.
Is there a polar bear population graph on the internet somewhere.?
Yes, there is one if you type in 'bear population chart' in google images. Hope this helps!
Why does a polar bear need to swim?
The water is part of their hunting environment as well as actually catching some of their food in the water they have to cross over stretches of water to go where they need to go.
