Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
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Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
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Dire wolves actually existed, living up to 10,000 years ago before going extinct.
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The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
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The colossal squid has the largest eyes in the world.
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The elephant shrew’s closest relative isn’t a shrew — it’s actually an elephant
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