A Primatologist Study is a field of study that focuses on the behavior and biology of primates, such as APES. Primatologists observe and analyze the behavior of primates in their natural habitats, as well as in captivity, in order to gain insight into their behavior and social structures. Primatologists also study the evolution of primates, their physical characteristics, and their interactions with other species. The term 'APES' refers to any of the large, tailless primates of the family Hominidae, which includes gorillas, chimpanzees, and orangutans.