The grizzled giant squirrel (Ratufa macroura) is a large, predominantly arboreal tree squirrel that occasionally descends to the ground to evade predators. Highly agile, they can leap long distances between trees and use tree cavities as temporary shelters. Their diet includes fruits, insects, bird eggs, and tree bark, playing a crucial role in seed dispersal. During the breeding season, they build large nests and give birth to a litter of one or two young, who remain in the nest for several months.