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 ...

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

Researchers have unearthed the tiny, fossilized teeth of the earliest-known relative of primates, pushing its range further south than ever before and giving us new insights into how it spread through ...

Sixty-six million years ago, a massive asteroid smashed into Earth. Life has undergone at least five mass extinctions in the ...

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

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

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 ...

Three monkeys died at a Hendry County primate facility, sparking criticism from animal-rights groups. The company says deaths ...

Humans not only recognize emotions on the faces of monkeys and apes but also unconsciously mimic those expressions.

California treats most non-domesticated wildlife as restricted by default, which is just one reason why it has some of the tightest exotic pet laws in the country. With tightly controlled exceptions ...