One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
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Squirrels forget where they hide about half of their nuts.
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Termites are being researched as a possible renewable energy source as they can produce up to 2 litres of hydrogen from ingesting a single sheet of paper, making them one of the planet’s most efficient bioreactors.
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Early American humans hunted car-size armadillos and used their shells for houses.
12