It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
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It has been estimated that a bite from a grizzly bear can crush a bowling ball.
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A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
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Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
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Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
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