It's time to hunker down with your best natural armor and be amazed by these reptilian and mammalian champions.Also, don't paint turtles!Research LinksTurtlesLive Science — Turtle FactsHow Stuff Works — Can a Turtle Outgrow Its Shell?Chattahoochee Nature Center — A Turtle’s Shell Is More Than Its HomeThe Dodo — Meet Jonathan, The Oldest-Known Animal In The WorldGuinness World Records — Introducing Jonathan, the world’s oldest animal on land at 187 years old ArmadillosOne Kind Planet — ArmadilloNew York Times — Armadillos Can Transmit Leprosy to Humans, Federal Researchers ConfirmCDC — Hansen’s DiseaseTreehugger — 13 Things You Didn't Know About Armadillos

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