While you’re writing down yet another password on the notepad hidden in your desk drawer, a squirrel is retrieving nuts it buried months earlier. It’s no secret these animals have good memories. But they don’t only remember where they stuck stuff: squirrels can remember how to solve a puzzle almost two years after they last saw it. And they can use that knowledge to tackle a problem they haven’t seen before.
In a lab at the University of Exeter, Pizza Ka Yee Chow studies gray squirrels. S