Rhesus macaques in U.S. research laboratories frequently pull out their own hair, pace in tight loops, and rock back and ...

Add Yahoo as a preferred source to see more of our stories on Google. A new study has found that chimpanzees may be far from shy bathroomgoers. A team of researchers spent more than 600 hours studying ...

Monkeys share many traits with humans — including our thirst for alcohol. Medical researchers were able to turn eight rhesus macaque monkeys into heavy drinkers by offering them increasing ...

A team of neuroscientists at the University of Pennsylvania has, for the first time, observed how social behavior is encoded in the brain when monkeys are doing normal, everyday things rather than ...