Tarsiers are social and tend to live in family groups with a home range. They are carnivorous, feeding on insects, spiders and other small arthropods as well as small vertebrates. Like other
tarsiers, this species can turn its head through almost 180 degrees in each direction, much like an
owl. Breeding pairs communicate by making characteristic duetting calls. Due to the great similarity of these calls to those of
Dian's tarsier (
Tarsius dentatus), the two species are thought to be closely related. Studies of the calls of tarsiers on Sulawesi and the surrounding islands enable cryptic species to be distinguished from one another, and indicate that there may be four as yet undescribed species. ==References==