Wolpertingers hatch blind and hairless in messy dreys of leaves and twigs hidden high in the treetops. Despite their relative helplessness, they are born with sharp claws and clinging feet that help them stay in the trees even if they manage to fall out of their nests. After a few weeks, they are ready to explore their homes under the watchful supervision of their mother. Litters usually contain four or five pups, though only one or two usually makes it to adulthood. The hatchlings are unable to fly or jump long distances until they are several months old, at which point they have reached their full size and are chased off by their mother to find their own territory.