As this species has been rarely studied, little is known of its habits in the wild (4). It lives in small groups of two to six individuals and occupies a home range of about 30 hectares (4). Within each group, only one adult pair reproduces each year, with the infant being born in June or July (2).
Perrier’s sifaka feeds on a variety of leaves, unripe fruit, stems and flowers (2) (4), and as it moves through the forest searching for its preferred foods, it will maintain regular contact with other members of its group by calling quietly (2). From time to time Perrier’s sifaka will descend to the ground to drink water or to cross open areas between patches of forest; at such times the sifaka is highly vulnerable to predators such as the fossa and feral dogs (2). A distinctive alarm call is given if a predator, or human, is spotted, and all members of the group will rapidly gather in the surrounding trees, watching the predator individual, before swiftly moving away through the canopy (2).