The majority of primate populations are declining and most species are under threat from a multitude of factors including hunting, habitat loss, degradation and fragmentation, disease, and climate change. A whopping 70+% of Asia’s primates are threatened with extinction. Despite these declining numbers, there are many benefits to conserving primates, both to humans and to the environment. The wide variety of primate species gives biologists unique insights into human evolution and to how morphology, and behavior evolve under a wide range of ecological conditions. In addition to the unique understanding the study of primates can provide, primates also play unique ecological roles. Primates play a crucial role in maintaining well-functioning ecosystems, from maintaining plant species composition to maintaining populations of other mammals. Focusing efforts on protecting these charismatic animals and their habitat in turn secures preservation of other species.