Fossils show that howler monkey ancestors were eating leaves 13 million years ago, shaping body size and evolution.

Suggested Citation: "Session 3: Nutrient Requirements of Nonhuman Primates." National Research Council. 2003. International Perspectives: The Future of Nonhuman Primate Resources: Proceedings of the ...

The Phillip Walker papers document his research and professional activities from 1969-2008 and primarily deal with his bioarchaeological research in California and his studies of primate feeding ...

Thorington, Richard W., Jr. 1970. "Feeding Behavior of Nonhuman Primates in the Wild." In Feeding and Nutrition of Nonhuman Primates. Harris, Robert S., editor. 15 ...

Considered messengers of the gods, the macaques are now made to wear costumes, do backflips, and walk on stilts to please crowds.