Macaque monkeys in two separate Japanese prefectures have taken the primatology world by storm after they were spotted attempting to mate with Sika deer. The phenomenon, originally observed in a ...

An evolutionary biologist at The University of Texas at Arlington is studying seasonal weight gain in male squirrel monkeys to determine its relationship to the species’ potential to sire offspring.

There comes a point in the lives of young owl monkeys when they leave their parents and strike out on their own to find a mate. In a new study of a wild population of Azara's owl monkeys in northern ...