During the day, they sleep rolled up in a ball in a hollow tree or thick foliage. The territory of a large male may overlap those of up to five females, while that of a small male overlaps those of only one or two females. The animals are basically solitary, except that there may be some association between related females. Territorial defense against members of the same sex is very pronounced and occupies the greater part of an individual's time during the night. Since a territory is relatively small, the entire area can be surveyed from a high branch by the resident, and animals may spend hours observing one another.
Defense involves visual displays, vocalization, chases, and sometimes severe fighting.
There are a variety of calls ranging from weak squeals to powerful, high-pitched sounds that function in distant communication and territoriality. The mating season is May-August. A single young is born from mid-September to December and is raised in a nest within a hollow tree. The female often leaves the young clinging to a branch when she forages. Weaning occurs at about 4 months, but the young may follow its mother until it is over a year old.