Macaque species that live in more tolerant social groups have larger volumes in brain regions tied to social processing, according to a study published in eLife that compared neuroanatomy across ...

1. Introduction / Tracy L. Kivell, Pierre Lemelin, Brian G. Richmond, and Daniel Schmitt -- 2. On primitiveness, prehensility, and opposability of the primate hand : the contributions of Frederic Wood ...

Primate phylogeny and adaptation -- The wet-nosed primates -- The dry-nosed primates -- Musculoskeletal system -- Heads -- Teeth -- Backs -- Primate locomotion and the forelimb -- Hindlimb -- Great ...

A monkey descending a tree trunk often keeps its head up, moving almost like a cautious climber backing down a ladder.