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How do Penguins, sled dogs, and otters live in some of the coldest areas on Earth?

December 30th, 2008

People normally think of Penguins as cold weather animals; and they are. Some may live in warmer climates, but in general the Penguin lives in some of the coldest regions of the Earth. The question for today is, how do penguins and other animals not only survive, but thrive, in such frigid conditions.

The average temperature in the Antarctic is a very chilly -58 degrees Fahrenheit. Therefore, Penguins never can forget to wear their cold weather gear. The penguin has a layer of blubber just below the skin that insulates its body. They then have a layer of downy feathers under an upper layer of feathers which overlaps and adds another layer of protection. When the birds go swimming or there is wet precipitation they have glands under their wings that contain oil which gives them a water tight seal. Try to imagine trying to endure that type of cold. Even with the protection of a house it would be difficult to stay warm. Scientists who study the region have to wear layers of clothing even when they are in doors.

What if you spent your entire life in the water? I don’t mean on the water, such as in a boat, but actually constantly in the water. In some regions, because of the warm currents from the South, water can be relatively warm year-round. However, in the Northern Pacific water temperatures never get much above 60 degrees. Thus, when you are swimming in the water, it lowers your body temperature and makes you feel even colder. A sea otter can spend every moment of its life in the ocean. From the time it is born until it dies some otters never touch dry land. These otters have to have a system of fur that will allow them to stay in very cold water without chilling them. The sea otter has two layers of very dense fur. The inner is short and dry. The outer layer of fur is made up of guard fur which overlaps and allows an air barrier to occur between the two which does not allow water to get to the inner layer of fur. The otter does not have any blubber, but because their fur is so dense (approaching one million hairs per square inch) the otters maintain their body temperature.

Northern species of dogs, that are generally thought of as sled dogs, also have an under layer of fur that protects them from the extreme northern cold. These dogs have been known to withstand wind chills of up to -100 degrees Fahrenheit. Normally the dog will sleep under the snow when outside. This gives it an extra protective layer from the cold other than the two that it already employs.

Without these cold fighting techniques, animals that live in the world’s coldest regions would have to move into more temperate zones. But by adapting, they can enjoy the serenity of their chosen environs.

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  1. Vicky
    January 1st, 2009 at 16:06 | #1

    Brrrr…. 58 degree F… Thats cold….

  2. Linda
    January 1st, 2009 at 16:07 | #2

    You seem to have a lot of information on animals… Where do you get this fantastic data from?
    Great Article….

  3. Louise
    January 1st, 2009 at 16:10 | #3

    I do love Penguins and I feel they are the cutest animal on Earth. This information definitely is something which I never had read before. I also liked your sense of humor.
    “They dont forget their winter gear” Wow, what will you think of next?

  4. Bob
    January 1st, 2009 at 16:32 | #4

    The question that comes to mind is why cant humans adapt physically as the animals do? We too live in cold regions but we tend to cover ourselves up in clothings rather than getting adapted to those conditions. Can anyone explain this?

  5. Simon
    January 1st, 2009 at 16:37 | #5

    I dont think Penguins or Otters are the cutest animals. I feel Pandas are the cutest. Can you provide some info on them too?

  6. David
    January 1st, 2009 at 17:16 | #6

    Good Article… A little more info on Sled dogs would be highly appreciated.

  7. Linda
    January 1st, 2009 at 17:45 | #7

    Bob, Humans can take care of themselves but with animals it is the nature that takes care of them.
    Penguins are made to survive in cold climate. They are not going to shed their feathers or bubbles underneath when they are brought to warmer climates. They can NOT survive there.

  8. dodge
    February 11th, 2009 at 21:33 | #8

    you should tell more about the dogs
    you rock,
    dodge

  9. dodge
    February 11th, 2009 at 21:35 | #9

    how cant humans adapt the ways otters can or other animals

  10. dodge
    February 11th, 2009 at 21:36 | #10

    you are very smart
    how do you get that smart

  11. December 14th, 2009 at 19:06 | #11

    Wow this helped me on this project I had to do about Sled Dogs and the Iditarod.

  12. jamonica
    December 15th, 2009 at 15:56 | #12

    i love dogs……………………………………………………………………………..

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