Pairs of Allen's swamp monkeys and lesser spot-nosed guenons entered into a standard quarantine period behind the scenes this past fall while preparations were made to relocate them to the primate ...

When monkeys in Thailand use stones as hammers and anvils to help them crack open nuts, they often accidentally create sharp flakes of rock that look like the stone cutting tools made by early humans.

When monkeys in Thailand use stones as hammers and anvils to help them crack open nuts, they often accidentally create sharp flakes of rock that look like the stone cutting tools made by early humans.