Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
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The seahorse is the only fish to have a neck.
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Giant Anteaters' front legs look like a panda.
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Sloths take two weeks to digest their food.
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A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
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