Giraffe walking across a path

7 Animals That Barely Sleep at All

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Humans are more sensitive to petrichor than sharks are to the smell of blood.

Fact
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Tropical jellyfish underwater

Jellyfish can evaporate if left out in the sun.

Fact
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The world’s most massive plant is a stand of 47,000 genetically identical aspen trees.

Fact
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A Greenland shark underwater

There are probably Greenland sharks alive right now that are older than the United States.

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Giraffe standing in the middle of a forest

Giraffe hearts weigh about 40 times as much as human hearts.

Fact
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