When cats are happy, they may squeeze their eyes shut.
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There's a phone app called RoboRoach that allows you to remotely control a cockroach through a chip that you to manually implant into the unwitting critter.
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It has been estimated that a bite from a grizzly bear can crush a bowling ball.
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The oldest recorded elephant lived for 82 years.
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Early American humans hunted car-size armadillos and used their shells for houses.
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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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