{"fact":"Just like humans, crows might learn about tools by playing with objects, even when there's no immediate reward involved.","context":"Unrewarded object exploration is widespread among non-human animals, and is thought to confer important benefits by allowing individuals to learn about physical properties and potentially form more abstract concepts of properties such as weight and rigidity.","source":"Megan L. Lambert; Martina Schiestl; Raoul Schwing; Alex H. Taylor; Gyula K. Gajdon; Katie E. Slocombe; Amanda M. Seed, Function and flexibility of object exploration in kea and New Caledonian crows, 10.1098/rsos.170652","index":307}