Scientists say pregnancy and nursing are "physically demanding" tasks, so female mammals must allocate their resources. The ...

PETA supporters wearing “No Monkeys, Better Science” shirts will pack the University of Washington’s (UW) Board of Regents ...

Though chimpanzees and gorillas often coexist in the same areas, interactions of any kind are thought to be rare – those that ...

Add Yahoo as a preferred source to see more of our stories on Google. Newly released PETA footage shows infant monkeys undergoing experiments at a University of Washington research laboratory. PETA ...

In West Africa, wild chimpanzees are doing something once thought to be uniquely human: making weapons to hunt. Using ...

Deep in a forest in Liberia, West Africa, Jimmy and Jenny Desmond set up the Liberia Chimpanzee Rescue & Protection sanctuary ...

When a baby chimpanzee is found in captivity, researchers race to reunite her with her family. But an unexpected member of ...

The Jacksonville Zoo welcomed a baby bonobo, the first born there in a decade. The mother, Kimia, and baby are in the African ...

Female mandrills are more likely to experience pregnancy loss when they are simultaneously nursing an infant, which may ...

Japanese macaques are familiar wild animals in Japan. However, there is much that is surprisingly unknown about their hidden ...

Textbooks say human birth is uniquely hard because of our big heads. A new primate comparison found squirrel monkeys, ...

The sweet baby gelada monkey bonding with proud mum Bachuma (Image: Yorkshire Wildlife Park) A baby gelada monkey has brought ...