The last of nine monkeys that escaped from the Oregon National Primate Research Center in Hillsboro was found at 2 p.m. Sunday, officials said.
Nine Japanese macaque monkeys got loose Friday after their keeper left the cage unlocked and they figured out how to open the door. Workers baiting cages with apples recaptured eight animals Friday and Saturday.
The last monkey was found on the primate center campus. All the monkeys are healthy juvenile males and not involved in health research, officials said. They are part of the center's breeding colony.
Hillsboro police helped find the final monkey.
Center director Nancy Haigwood said the perimeter fence will be improved to make it more difficult for an animal to leave the property.
"We will be investigating the cause of this incident to try and prevent additional releases," she said.
I'm so glad that the Center will do a better job of incarcerating its prisoners (insert sarcasm heavily here). Isn't it ironic how these animals show their clear intelligence by learning how to open a door at the same time their fellow species members are being sacrificed to science?