One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
Jellyfish as a species are actually older than dinosaurs and sharks.
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The elephant shrew’s closest relative isn’t a shrew — it’s actually an elephant
9
15% of snails survive digestion by birds and are found alive in their droppings, potentially leading to the spread of snail populations.
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Early American humans hunted car-size armadillos and used their shells for houses.
12
Rex the German Shepherd was a rescue dog with a bad temper. He refused to be fed by humans and would attack strangers, but he’s a changed dog after falling in love with Geraldine the goose!
10