What are the different types of flying squirrels?

There are several species of flying squirrels, primarily categorized into two genera: Petaurista and Glaucomys. Petaurista includes larger species like the Indian giant flying squirrel and the woolly flying squirrel, while Glaucomys features smaller species such as the northern and southern flying squirrels found in North America. These squirrels are known for their unique patagium, a membrane that enables them to glide between trees. Each species has adapted to different habitats, ranging from tropical forests to temperate woodlands.