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  2. From Ice Age to Modern Day: How Reindeer Thrive in Extreme Cold

    www.aol.com/ice-age-modern-day-reindeer...

    Reindeer evolved during the last ice age to withstand temperatures as low as minus 94°F (minus 70° C. Yes, you read that right. This is an amazing feat, accomplished only by a select group of ...

  3. Discover the Incredible Adaptations That Help Reindeer Thrive ...

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    Reindeer are a species of deer also known as caribou in certain regions. They are found in the Arctic tundra and boreal forests. Finland is home to a small population of woodland reindeer.

  4. Discover the Epic Journey of Reindeer: From Tundras to Forests

    www.aol.com/discover-epic-journey-reindeer...

    Reindeer have adapted to endure the cold and survive extreme winters. In North America, wild reindeer will seek shelter and tough out winter in forested areas. In the spring, when the days become ...

  5. Mountain reindeer - Wikipedia

    en.wikipedia.org/wiki/Mountain_reindeer

    The mountain reindeer has several physiological adaptations to cope with different environmental temperatures. Reindeer have hemoglobin that allows for high oxygen unloading even at very cold temperatures. [1] This is essential because reindeer limbs are often kept much colder than core body temperature, a phenomenon known as regional ...

  6. Ectotherm - Wikipedia

    en.wikipedia.org/wiki/Ectotherm

    An ectotherm (from the Greek ἐκτός (ektós) "outside" and θερμός (thermós) "heat"), more commonly referred to as a "cold-blooded animal", [1] is an animal in which internal physiological sources of heat, such as blood, are of relatively small or of quite negligible importance in controlling body temperature. [2]

  7. Homeothermy - Wikipedia

    en.wikipedia.org/wiki/Homeothermy

    Cold-blooded animals are often limited by external temperatures, which can affect their ability to hunt, escape predators, and carry out other essential activities. Homeothermy could have provided a selective advantage by allowing animals to be active for longer periods of time, increasing their chances of survival.

  8. Discover the Epic Journeys of Reindeer: Nature’s Long ... - AOL

    www.aol.com/discover-epic-journeys-reindeer...

    Reindeer are meandering animals. In fact, some reindeer migrate the farthest of any terrestrial animal. They trek north over 600 miles when summer begins and then move south again for winter.

  9. Barren-ground caribou - Wikipedia

    en.wikipedia.org/wiki/Barren-ground_caribou

    Several named Rangifer fossils in Eurasia and North America predate the evolution of modern tundra reindeer. Archaeologists distinguish “modern” tundra reindeer and barren-ground caribou from primitive forms — living and extinct — that did not have adaptations to extreme cold and to long-distance migration. [30]