While homophobes have long claimed that homosexuality “isn’t natural,” a newly published study found over 59 different primate species that exhibit same-sex sexual behaviors (SSB). This finding ...

Add Yahoo as a preferred source to see more of our stories on Google. Japanese macaques at Joshin-etsu National Park in Japan. (Peter Adams / Getty Images file) (Peter Adams) Humans are far from the ...

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

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 ...

Cooperative behaviour and prosociality in nonhuman primates constitute a vital area of research that illuminates the evolutionary origins of complex sociality. Studies indicate that primates employ a ...

A biologist has been studying animals like hedgehogs and chimpanzees and has found evidence of a secret language that mammals ...

In a recent study by Kyoto University in Japan, researchers found that primates engage in socially contagious urination behaviors. Chimpanzees were observed to urinate around the same time throughout ...

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 ...

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 ...