Captive chimpanzees spontaneously use tools to excavate underground food
(PHYSorg.com Biology)

Chimpanzees in captivity can successfully work out how to use tools to excavate underground food, even if they`ve never been presented with an underground food scenario before, according to a study published May 15, 2019 in the open-access journal PLOS ONE by Alba Motes-Rodrigo and colleagues and directed by Adriana Hernandez-Aguilar from the University of Oslo.