A new study posits that same-sex sexual behavior developed to help primates in complex social groups ease tension, reduce ...

Nonhuman primates like bonobos and chimpanzees might engage in same-sex sexual activities to strengthen bonds, particularly ...

Researchers uncover evidence that the gut microbiome and brain connection can influence brain gene expression and neural ...

Same-sex behavior is common across the animal kingdom—more than 1,500 species are estimated to have been observed engaging in ...

The evolutionary journey from primitive plesiadapiforms to early primates during the Paleocene and Eocene epochs represents a critical chapter in mammalian history. Fossil records from these periods ...

Bonds between same-sex individuals help apes and monkeys to manage conflict and strengthen alliances, especially in dry ...

BUFFALO, N.Y. ­­ ­ ­­— Saliva is a bodily fluid most of us take for granted despite the significant roles it plays: aiding in digestion, maintaining strong teeth and defending against oral disease.

Primate evolution claim challenged An analysis of 37 million year old primate fossils is fueling a debate over the existence of an evolutionary link between lemur-like and monkey-like primates -- a ...