If it weren’t for a cheeky monkey named Naruto, who, as the story goes, stole a photographer’s camera in an Indonesian park and snapped a selfie, crested black macaques might still be ...

Since 2012 Dubuc and colleagues from New York University have studied more than 250 free-ranging rhesus macaques at a field site in the Caribbean. The goal: to learn how face color—which varies ...