It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
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Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
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Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
There's a competition in Sweden called Kaninhoppning, or rabbit show jumping.
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The Platypus used to be considered a myth like Bigfoot and the Yeti.
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