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The blue whale is the largest animal ever

Blue whales are the largest animals ever to live on Earth, and the biggest may eat up to 6 tons of krill a day.

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They strain huge volumes of seawater through baleen plates that hang from the roof of the mouth. Blue whales live in every ocean except the Arctic.

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Hellbenders breathe through their skin

A hellbender absorbs up to 95 percent of its oxygen through loose folds of skin along its sides.

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The maned wolf is neither a wolf nor a fox

The maned wolf looks like a long-legged fox, but genetic studies show it is neither a fox nor a true wolf.

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Clouded leopards have the longest canines for their size

A clouded leopard's canine teeth are longer in proportion to its skull than those of any other wild cat.

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