Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
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The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
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Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
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Ants have tiny magnetic compasses in their antennae which help them navigate.
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It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
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When dragonflies mate, their tails form a love heart.
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