A study of feeding behavior suggests the fish feed differently in front of their partners—a behavioral feature also found in primates.

A transposable element that jumped into the TBXT gene, which is linked to tail morphology, appears to be to blame for our missing appendage.

Zoo officials say the captive primates are recovering, but scientists worry the virus could spread quickly through dwindling wild populations.

Studying nonhuman primates, the University of Washington neuroscientist has identified important features of the neural underpinnings of learning and memory.

The skull changed shape in different ways than the brain during evolution, according to a new comparative study.

Bonobos eat their aquatic greens, perhaps to get their daily dose of iodine.

The seven primates came into contact with a dye that was used on their mothers, documents reveal.

For primates, males’ fancier ornaments are linked with smaller testes, according to a new comparative study.

Nearly 50 years after its development, only a handful of creatures have passed the self-awareness exam. A new attempt with fish highlights a debate over the test’s use and meaning.

The function of early hominins’ enlarged brow ridges, and their reduction in size in Homo sapiens, have puzzled paleoanthropologists for decades.

A study finds two species of guenon monkeys in Tanzania have been mating and producing fertile offspring for generations.

The approach, which has never before been successfully attempted in primates, could lead to improved animal models for human biology and disease.

The Tapanuli orangutan has been identified as the newest species of great ape, but also likely the most endangered. 

The results of a historical primate behavior analysis suggest that species with fruit-filled diets evolved larger brains.

The newly identified Skywalker gibbon (Hoolock tianxing) is threatened with extinction, along with roughly 60 percent of primate species worldwide.

The findings suggest language may have started to evolve millions of years earlier than once thought.  

Wild capuchin monkeys in Brazil produce sharp stone flakes by accident, causing some researchers to suggest a rethink of the beginnings of human tool use.

After losing out on “personhood” in a legal battle, two chimpanzees that were held at a university in New York return to a research center in Louisiana.

The remaining 50 animals from a waning research program at the National Institutes of Health will head to sanctuaries.