The existing as many as six National parks, including four Wildlife Reserves and a Hunting reserve in total occupy more than 7.30 percent lead area of the most contrasting and spectacular natural lanscape in the world. They exhibit every different type of altitudinal geographical features and changing vegetation from the barren steppe of the trans-Himalayan region in the extreme north; the hemlock, deodar and firn trees of the higher altitude valleys and hills; pine and rhododendron of the intermediate altitude to the great sal (shorea robusta) forests of the Terai and dun valleys in the southern region.

Almost one hundred different species of mammals and more than 800 species of birds survive in their natural habitat in these National parks of Nepal.

The Chitwan National Park has so far successfully managed to preserve and save some of the most rare animals in threatening peril by protecting them in its sprawling jungles.

The chief aims of the National parks and Reserves are, primarily, to ensure the conservation and management of the natural resources and environment, including the flora and fauna as well as their habitats, and secondly, to develop and promote nature and wild life tourism, where suitable in such areas possessing tourist attractions, so long as these activities are not detrimental to the implementation of conservation programmes.