Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
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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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There is a sea snail that wears a suit of iron plated armor. It is the only known animal to use iron sulphide as skeletal material.
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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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An alligator can go through 2,000 to 3,000 teeth in a lifetime.
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Lurch, a Watusi bull, had the largest horns in the world.
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Honeypot ants are a unique insect that use their own bodies as living storage pots of honey.
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