They primarily live in trees but can be seen on the ground. They do not hibernate in the winter. Their food, some of which they store, includes nuts, berries, fruits, seeds, buds, twigs, bark, eggs, fungi and insects. They usually nest in tree cavities or leaf nests. Gestation takes forty to forty-five days, with one to seven young being born naked and blind, there are up to two litters a year.
Eyes are large, tail is flattened.
Woodlands with tall trees. Nocturnal, sociable, sleeps by day in a hole in a tree. Lands with an audible thump, such as on a camp roof. Lives up to 13 years. Flying squirrels have a fold of loose furred skin along their sides that extends from wrist to ankle.