Early American humans hunted car-size armadillos and used their shells for houses.
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A group of pugs is called a grumble.
10
When dragonflies mate, their tails form a love heart.
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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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The most expensive cow in the world was sold in 2009 for $1.2 million.
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