Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
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A scorpion can hold its breath for up to 6 days.
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When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
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There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
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Only 3% of bird species have penises.
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