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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When a male honey bee climaxes during sex, his testicles explode and then he dies.
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Penguins have a gland above their eye that turns saltwater into freshwater.
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Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
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