In just about every species of mammal, the female lives longer than the male.
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Ducks will only lay eggs early in the morning.
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Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
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Placing alcohol on a scorpion's back will make it go crazy and fatally sting itself.
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All clams start out as males; some decide to become females at some point in their lives.
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Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
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