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Walrus
The massive blubbery body of the walrus helps it to stay warm in frigid Arctic waters. Walruses can also slow down their heart rate to conserve oxygen while diving. They use their tusks -- found on both males and females -- to help pull their huge bodies out of the water as well as to break breathing holes into the ice from underwater.
Amazing Cold-Weather Creatures
These 15 animals thrive in extremely cold climates around the world
Related: Earth
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Actually, I'm wrong. They are the same species, but they look different, and reindeer are domesticated.
November 11 2012 at 10:18 AM Report abuse Permalink rate up rate down ReplyCaribou aren't reindeer. They are two distinct species.
November 11 2012 at 10:17 AM Report abuse Permalink rate up rate down Reply