Chimpanzees may not be quite as clever as their human counterparts, but that didn’t stop seven of them building a ladder and escaping from their enclosure at the Kansas City Zoo.
Bemused zoo director Randy Wisthoff told how the chimps made the makeshift ladder from a tree, scaled a wall and broke out of their cage.
The hairy creatures’ taste of freedom was shortlived, however, as they were soon round up by zookeepers and taken back to their cage.
One of the chimps apparently leaned a log against the wall of the enclosure, giving the primates a leg-up to the top.
'The chimps had a ringleader. He got up on the log and got some others to join him.' explains Wisthoff.
Wisthoff added ruefully that the experience has shown chimps are a lot smarter than we give them credit for.