15% of snails survive digestion by birds and are found alive in their droppings, potentially leading to the spread of snail populations.
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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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There's a rare breed of pig that looks like a sheep.
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There's a lizard known as the 'Jesus Lizard' that can run across water.
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The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
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