According to the Sunset Zoo, Kivuli, the black-and-white colobus monkey, gave birth around 1:30 a.m. on Dec. 7. Zoo staff ...

Conflict between humans and baboons can tear communities apart. Shirley C. Strum has studied wild olive baboons in Kenya for ...

Learn how male bonobos use subtle behavioral and reproductive cues to pinpoint the fertile window, even when the usual ...

Scientists trace the origins of human kissing back over 20 million years to ancient apes who first showed gentle ...