One of the chimps apparently pulled a log or a branch and
leaned it against the wall of the enclosure, giving the primates
a leg-up to the top, zoo director Randy Wisthoff said.
The animals did not have any contact with zoo visitors, as they
escaped into an area reserved for zookeepers, he added. There
are 12 chimps in total at the zoo, which was closed after the
"We had a ringleader," Wisthoff said. "He got up on the log and
got some others to join him."
Using food to entice them, the zookeepers herded the wayward
chimps back into an indoor enclosure. The chimps were on the
loose for around an hour.
Wisthoff said zoo staff regularly checks trees in the area of
the chimpanzees for fallen limbs but in this case a chimp
apparently pulled a log or large limb out of a tree.
"Chimps are so much stronger than humans," Wisthoff said, adding
that they are also very smart.
(Reporting by Kevin Murphy; editing by Eric M. Johnson and Miral
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