Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
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It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
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The elephant shrew’s closest relative isn’t a shrew — it’s actually an elephant
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Cats sleep for 70% of their lives.
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Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4