Three monkeys that escaped their trailer after a collision on a Pennsylvania highway Friday were recovered the next day but have been euthanized after officials assessed possible health risks.

43 Monkeys Escape From a South Carolina Medical Lab. Police Say There Is No Serious Danger Forty-three monkeys escaped ... to escape endangered not only the safety of the animals, but also put ...

Forty-three monkeys bred for medical research ... "The clear carelessness which allowed these 40 monkeys to escape endangered not only the safety of the animals, but also put the residents of ...