When cats are happy, they may squeeze their eyes shut.
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Mosquitoes don't just bite you, they also pee on you.
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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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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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