An additional five rhesus macaque monkeys that escaped from a South Carolina research facility last week have been recovered, meaning about a dozen of the rhesus macaque primates remain at large.

More than half of the monkeys that escaped a Yemassee, South Carolina medical research facility last week have been recovered, but 18 remain on the loose.

Yes, escaped lab monkeys. Forty-three rhesus macaque monkeys escaped from a research facility in Yemassee, South Carolina, on Wednesday after an employee accidentally left a door open. Yemassee Police Chief Gregory Alexander told the AP, "They are not infected with any disease whatsoever. They are harmless and a little skittish."