This growing collection lets you peek inside the worlds of our fellow primates; their appearances, lifestyles, dynamics, adaptations, behaviors, languages, conservation statuses, and more. Be sure to notice the relationships between how they live and where they live. How do their habitats nurture them? And how do they, in turn, enrich their ecosystems?

As you explore, bear in mind that the exact number of species and subspecies is a bit fluid as DNA analysis provides deeper insights into taxonomic classifications. Subspecies may be reclassified as species and vice versa as new data come to light. In addition, new technologies facilitate the discovery of previously undiscovered or unstudied species while, sadly, we may learn that others become extinct.