Petaurista breviceps, commonly known as the black giant squirrel, is a large species of tree squirrel found in the forests of Southeast Asia. It has a distinctive black fur coat, with a bushy tail that can be as long as its body. This species is primarily arboreal, meaning it spends most of its life in trees, where it forages for fruits, nuts, and seeds. These squirrels are known for their strong hind legs, which allow them to leap between branches with ease. Petaurista breviceps plays a crucial role in its ecosystem by aiding in seed dispersal, contributing to forest regeneration and biodiversity.