Crying is one of the most recognizable human emotional signals. Tears appear when people experience grief, relief, joy, or deep stress. Because this response is so familiar, observers often assume ...

In mammals, social behavior and social status can substantially influence the survival, reproductive performance, and health of individuals. However, it is not yet fully understood how the translation ...

A new study shows macaque species with more tolerant social systems have larger brain regions linked to emotions and social signals.

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 ...

Nonhuman primates are our closest living relatives, and no other group of mammals can remind us of ourselves the way nonhuman primates do. We will start this course by examining the phylogeny, ...

A recent study into same-sex behavior in primates finds that social organization and ecological factors, including climatic conditions, influence this behavior. In gorilla groups, same-sex relations ...

In the animal kingdom, hunting behavior is often associated with large carnivores, but some primates also prey on other primates. Footage reveals chimpanzees coordinating group hunts to capture ...

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 ...

Viral baby monkey’s new behavior sparks questions about imitation.