Ploughshare TortoiseStatus: Critically EndangeredWhile protected by law in Madagascar, the critically endangered ploughshare tortoise (Astrochelys yniphora) sometimes falls prey to human smugglers. It’s among the 25 most endangered turtles in the world. Its name comes from the plow-shaped projection between its front legs. Photographed at Turtle Conservancy, Ojai, California.