BIODIVERSITY:

The Chitwan National Park is a very rich in terms of bio-diversity; the park's bio-diversity richness, due to its wide range of habitats and heterogeneous environment. The Chitwan National Park has a huge diversity of fauna including a considerable number of mammals 56 species, such as Great One-horned Rhino, which is second largest of five rhino species, Bengal Tiger, four different species of Deer and two species of Monkeys and many others. The Park is home to, a diverse species of Reptiles 47 species, such as two different types of crocodiles, “Gharial” and "Marsh mugger", which lives in the rivers and lakes.

The winter is the best time to see them, while basking in the sun along the river banks; they mainly subsist on fish, small mammals and scavenge on carcasses. Among 21 species of crocodilians in the world, the “Gharial” is considered the largest of the living crocodiles and also, it is the most endangered species, which has long and thin snout. And park is also a home to fresh water “Gangetic dolphin”.
The Park has unexpectedly huge variety of poisonous and non poisonous snakes. They appear during summer season. The largest one is the Indian Rock Python, which have been known to grow up to 7 meters in the length; it is the largest snake of the sub-continent.

The Park supports four different kind of poisonous snakes, such as King Cobra the largest of the poisonous snake in the world, which is rare and other poisonous snake, include the common cobra, Green Pit vipers, Common kraits and Banded krait, these are considered deadly poisonous. Other non poisonous snakes include the rat, Striped-keel back, cat, Bronze-backed tree snack, chequered keel-back and common worm snake. The park provides appropriate habitats for variety of amphibian 9 different species, such as, Indian bull frog, “Rana tingrina” and many others.

Due to multitude of ecological niches for birds to exploit, the avifauna of the Park is exceptionally high 559 species and more than half of the bird listed for Nepal is found in the Chitwan National Park, Including rare Greater hornbill, several globally threatened species, such as Bengal Florican “Jerdon's” Babbler, Bristle grass bird, and many more.

The park also harbour a huge varieties of butterflies 150 species such as Common Tiger, Lime Swallow Tail, Indian Red admiral, Great Egg fly and many more.
The rivers lakes and streams of the park, provides appropriate habitats for large varieties of fishes 126 species, such as “Mahser”, Stone Carp, Garfish, Puffer fish, Feather back, stone eel, shrimp and many other.

The Park is exceptionally rich in array of plants 570 species, has been recorded so far, the Park has main three different kinds of vegetation and has been characterized by tropical to sub-tropical forests. 70 percent of the park's vegetation is the Sal-forest; Sal is the climax types of vegetation last in the natural succession.