He was hatched around 1832, before Queen Victoria took the throne and decades before Thomas Edison patented the lightbulb. Jonathan, an Aldabra giant tortoise, is the world's oldest known land animal. Scientists have now read his genes to find out how he made it so far. Meet Jonathan Jonathan has spent most of his life on St. Helena, a British island in the South … [Read more...] about Jonathan the Tortoise Is 194 and Still Thriving — and His DNA Shows Almost No Wear and Tear