Gorillas escape at the Calgary Zoo -- again.
CALGARY - It's a lesson in what can happen when you feed the animals.
For the second time in less than a year, some of the gorillas at the Calgary Zoo managed to escape and get into the zookeeper kitchen attached to their enclosure.
The zoo says it is investigating what led to the Sunday afternoon breakout.
It says no staff members or animals were hurt.
In March, a keeper at the Calgary Zoo was fired after leaving a door unlatched, allowing several gorillas to escape into the off-limits kitchen.
The keeper was roughed up by one of the animals, but wasn't seriously hurt.
The same keeper had previously taken responsibility for leaving a knife inside the gorilla enclosure in 2009.
A photo of one of the primates holding the knife garnered international headlines, but a report by the Canadian Association of Zoos and Aquariums cleared the zoo of any wrongdoing.