Between 1 and 4 cubs are born. They are blind but fully covered with hair. Their eyes are open on the 18th day and they leave the nest for the first time at 90 days. They begin to eat solid food in autumn and are weaned before the onset of winter. They become sexually mature at 18 months.
Infant mortality is very high.
To produce enough milk for the cubs the mother has to eat three times the normal quantity of bamboo. The usual communication call is a series of short whistles and squeaks. They are seldom aggressive and are relatively easy to tame and handle. Walker's Mammals of the World, 4th Edition pp.