Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
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A cow produces around 200,000 glasses of milk in her lifetime.
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When dragonflies mate, their tails form a love heart.
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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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In 2011, a male tiger in India adopted a litter of orphaned cubs, taking on the role of ‘mother’. Wildlife officials say such behavior had never been observed before.
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