A nocturnal species, the greater slow loris hides high up in trees to sleep during the day, often on branches or palm fronds (5). It sleeps tightly curled in a ball while gripping nearby foliage for support (6).
The greater slow loris is a slow-moving species, and has a low metabolic rate compared to other mammals of its size (5). It is unable to leap, and instead walks very slowly on all fours, keeping three feet in contact with the branches at all time (3) (5). While hunting, the greater slow loris may hang upside down from branches, leaving both hands free to catch flying insects, preferring insects with a pungent taste and smell (4) (6). This species also feeds on fruit, small animals, birds eggs, and gum from trees (4).
Gestation in the greater slow loris lasts for 191 days, after which a single young is born (3) (4). Birth takes place at night, and the newborn immediately climbs up to the deep, concealing fur of the female’s belly, and clings on with its hands and feet (6). The infant is only removed from this protected position while the female forages (3) (4).