Rhesus macaques in U.S. research laboratories frequently pull out their own hair, pace in tight loops, and rock back and ...

Humans are far from the only primates engaging in same-sex sexual activity. A new study found instances in which 59 nonhuman primate species, including bonobos, chimpanzees and macaques, have taken ...

Why the Latest Science Leads Us to a New Theory of Human Nature, by Jonathan Leaf (Bombardier, 320 pp., $21) Ever since Darwin, biologists have believed that much could be learned about human nature ...

A major new study has examined the prevalence of same-sex behavior in primates. It appeared Monday in Nature Ecology and Evolution. It’s been described as the most comprehensive review to date on the ...

Image by Helena Sushitskaya from Pixabay UC San Diego’s Federico Rossano breaks down the science behind dogs’ “word buttons,” ...

For decades, scientists believed that bonobos, one of our closest living relatives, were among the most peaceful primates.

Adaptation and behavior in the primate fossil record / Callum F. Ross ... [et al.] -- Functional morphology and in vivo bone strain patterns in the craniofacial region of primates: beware of ...

Researchers at the University of Veterinary Medicine Vienna are reporting that Goffin's cockatoos (Cacatua goffiniana) engage in food flavoring behavior by dunking food into soy yogurt. Experimentally ...