Jonathan, a Seychelles giant tortoise, is the world's oldest living land animal (Credit: Guinness World Records/ CC-BY-SA-2.0)

A Seychelles giant tortoise named Jonathan turned 191 years old on December 4, 2023! To put it in perspective, the reptile was born before the invention of the telephone, postage stamps and photographs. With this milestone, Jonathan extended two previously-held Guinness World Records (GWR). He is the oldest living land animal and the oldest documented chelonian (tortoise, turtle, or terrapin).