Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
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Early American humans hunted car-size armadillos and used their shells for houses.
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Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
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Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
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Mosquitoes don't just bite you, they also pee on you.
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Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
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There's a lizard known as the 'Jesus Lizard' that can run across water.
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A zoo in China gave a gay penguin couple the opportunity to raise a chick.
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