The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
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The elephant brain weighs about 6,000g.
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Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
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Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
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Giant Anteaters' front legs look like a panda.
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