The natural forest widely remain in Mt. Takao which is different from the man-made forests in nearby area. The south face is warm temperate forest with trees like oak trees and the north face is temperate forests with trees like Fagus crenata. About 30 kinds of animals including mammals such as flying squirrel and squirrel, reptile, amphibia and fish inhabits that prefers Mt. Takao's varieties of species of preys and forests. One way to enjoy exploring Mt. Takao is to find these animal's nests.