A comprehensive new study has examined the prevalence of same-sex behavior in dozens of primate species.

More than 59 different primate species have been observed participating in some kind of same-sex behaviors, making it extremely common.

Almost 60 different primate species exhibit same-sex sexual behaviors.

Many primate species have been observed engaging in same-sex sexual behavior. A new study suggests it likely developed evolutionarily to help reduce conflict and build bonds.

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

Primates form same-sex sexual behavior alliances to gain rank and mating opportunities Male primates use same-sex bonds as ...

Same-sex behavior is widespread in primates and may help strengthen social bonds and improve survival under challenging ...

Homosexual behavior in primates has a deep evolutionary basis and is more likely to occur in species that live in harsh environments, are hunted by predators or live in more complex societies, ...

Biologists tend to look at the animal kingdom and try to categorize things in an organized fashion. But nature has a way of defying our neat little categories. Take something as common as same-sex ...

Add Yahoo as a preferred source to see more of our stories on Google. Same-sex behavior is common across the animal kingdom—more than 1,500 species are estimated to have been observed engaging in same ...

"One result of nine-month 'Primate project' held at the Center for Advanced Study in the Behavioral Sciences, Stanford, California, during 1962-1963. Organized by Sherwood L. Washburn and David A.

Overview of the Mesoamerican primate fauna, primate studies, and conservation concerns / Alejandro Estrada ... [et al.] -- Taxonomy and distributions of Mesoamerican primates / Anthony B. Rylands ... ...