The San Diego Zoo's newest Guianan squirrel monkey, born Aug. 25, is thriving while staying close to mom Rocket.

Thirteen million years ago, a medium-sized monkey known for guarding its territory among the treetops with a fearsome "howl" started doing something new. This monkey, one of the oldest known ancestors ...

Global wildlife trade authorities say Cambodia has made little progress in cleaning up its monkey export industry, a year ...