Thirteen million years ago, a group of medium-sized monkeys known for guarding their territory among the treetops with fearsome "howls" started doing something new. These monkeys, among the oldest ...

Scientists call this phenomenon emotional mimicry. Biologists and psychologists consider this automatic matching of another’s ...

Bonobos remain the "make love, not war" primates of the animal kingdom, but new studies prove they still have an edge.

A sediment-washing “bubbler” helped researchers recover 65.5-million-year-old teeth that illuminate how early primate ...

An extinct relative of the howler monkey may have been the first leaf-eating primate in South and Central America ...

Primates display a wide range of behaviors that can appear extreme but are rooted in survival and social competition. Some species rely on complex hierarchies where dominance is maintained through ...

Crows can recognize geometric patterns, suggesting that humans aren't unique in understanding shape structure.

Humans perceive emotional expressions displayed by non-human primates and spontaneously mimic these expressions, according to ...

Research suggests 66 percent of primate species are vulnerable, endangered, or critically endangered and 85 percent of primate species are in decline. In many ways, humans are largely to blame. While ...

Scientists have developed a new gene therapy that can reverse vision loss in primates, potentially laying the groundwork for treatments in humans as well. Last month, a team of scientists from Harvard ...