Early American humans hunted car-size armadillos and used their shells for houses.
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When dragonflies mate, their tails form a love heart.
22
In 2005, in Africa, it was reported that three lions rescued a 12-year-old girl from kidnappers and guarded her for half a day until help came.
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Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
By putting a frog in a bucket of milk, scientists following up on an ancient Russian way of keeping milk from going sour have identified a wealth of new antibiotic substances.
9
Worker bees must visit around 4,000 flowers in order to make one tablespoon of honey.
5
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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