ABSTRACT Primates are one of the forest-dwelling animals that have an important meaning in life in nature. The Kokah Lutung (Presbytis siamensis) is a folivorous Colobinae primate that lives in lowland forest habitats and is found on the outskirts or estuaries of rivers. According to IUCN (2020), the Kokah Lutung in the IUCN Red Data Book is a protected animal with Near Threatened status and C…