Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
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A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
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Ants have tiny magnetic compasses in their antennae which help them navigate.
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Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
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One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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Early American humans hunted car-size armadillos and used their shells for houses.
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It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
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