Examples for positive, neutral and negative expressions. Copyright held by the authors. Humans perceive emotional expressions displayed by non-human primates and ...

Prologue -- Part one. Social behavior. Primate diversity -- Barbary macaques : model monkeys -- Primate social systems -- Chacma baboons : into the wild -- Guinea baboons : uncharted territories -- ...

Primate foundations of human intelligence: a view of tool use in nonhuman primates and fossil hominids / T. Matsuzawa -- What you see is different from what I see: species differences in visual ...

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 ...