The research behind this is wild. A scientist in Vienna trained giant tortoises to bite a target on the end of a stick for carrots. She came back 9 years later, and they still did it on the first try, no reminders needed.The study came out in 2019, run by a team from Japan, Israel, and Vienna; the tortoises were Aldabra and Galapagos giants, the kind that can live past a hundred. Three months after the lessons stopped, every tortoise still got it. Nine years later, the three Aldabras still at th