The park is situated on the north bank
of the river Brahmaputra, covering an area of 72 sq. km., Orang is a mini
Kaziranga. It is about 32 kms. from Tezpur and 140 kms. from Guwahati. The
Park is famous for its natural scenic beauty that snatches the attention of
the visitors / tourists to it.
The park has a very dense population of tiger (Panthera tigris) (estimated
25 no in 75 sq km). The population of the Great Indian One Horned Rhino
(Rhinoceros unicornis) was estimated 97 in 1993, second highest. However,
due to unbated poaching during 1994-1998 the number of rhino has gone down
to less than 50 in 2000. The park also has estimated 45-60 Bengal Florican
(Houbaropsis bengalensis). Among other mammals Blind Gangetic Dolphin,
Indian Pangolin, Rhesus Macaque, Bengal Porcupine, Indian Fox, Small Indian
Civet, Otter, Leopard cat, Fishing cat are to be noted.
The Avian fauna of the park is also very rich. It is represented by 47
families of which Anatidae, Accipitridae, Addenda, Ardeiae are represented
with maximum number of species. Important avifauna are Bengal Florican
(Houbaropsis bengalensis), Spot-billed Pelican (Pelicanus philippensis),
Black-necked Stork (Ephippiorhynchus asiaticus), Greater Adjutant Stork
(Leptoptilos dubius), Lesser Adjutant (Leptoptilos javanicus), Wooly-necked
Stork (Ciconia episcopus), Rudy Shelduck (Tadorna ferruginea), Gadwall (Anas
strepera), Mallard (Anas platyrhynchos), Pintail (Anas acuta), Pallas's
Fishing Eagle (Haliaeetus leucoryphus) and a number of others including
forest and grassland birds.
Among reptiles Indian Rock Python, Cobra, 9 species of turtles are known
till now. (Reptile diversity is not well known.)
Amphibian diversity is very high in the park. 19 species of amphibians have
been identified yet, of which three species are new to science.
Flora
The floral wealth of the park is very significant. There are planted
forest, Natural forest, Non aquatic grass/plants to be found among the
macrroflora of the park. Planted forest patches are composed of species like
Dalbergia sisoo, Bombax ceiba, Acacia catechu, Terminalia myriocarpa,
Anthrocephalus kadamba, etc.
The Natural Forest species are like Bombax ceiba, Dalbergia sisoo,
Sterculia villosa, Trewia nudiflora, Zizypphus jujuba, Litsaea polyantha,
etc. Among the non aquatic grassland species the prominent are Phragmites
karka, Arundo donax, Imperata cylindrical, Saccarum spp. etc.
The aquatic grass/plants species are Andropogon spp., Ipomea reptans,
Enhydra flushians, Nymphia spp., Wichornia spp. etc.