Keepers at Furuvik Zoo found that the chimp collected and stored stones that he would later use as missiles.
Further, the chimp learned to recognise how and when parts of his concrete enclosure could be pulled apart to fashion further projectiles.
The findings are reported in the journal Current Biology.
There has been scant evidence in previous research that animals can plan for future events.
Tuesday, March 10, 2009
Zoo Chimp Shows Ability to Plan Ahead
He was storing hundreds of stones to throw at visitors at the Furuvik Zoo.