The pale giant squirrel (Ratufa affinis) is a large arboreal squirrel that inhabits moist evergreen and swamp forests of Southeast Asia, including the Malay Peninsula, Borneo, and Sumatra. Weighing 1–2 kg, it primarily lives in the canopy and feeds on fruit, seeds, leaves, bark, and insects. It is diurnal and shows solitary, territorial behavior, marking with urine and by stripping bark. Breeding occurs year-round; gestation lasts about 30 days and typically produces 1–2 young. Populations have declined due to deforestation and hunting, and the species is classified as Near Threatened.