Arunachal Pradesh is situated between 26o28′ and 29o30′ North latitudes and 97o30′ and 97o30′ East Longitudes covering an area of 83743 sq. km. Bio-geographically it is situated fin the Eastern Himalayan province, the richest biogeographical province of the Himalayan zone. The entire territory forms a complex hill system with varying elevations ranging from 50m in the foot-hills and gradually ascending to about 7000m, traversed throughout by a number of rivers and rivulets. Sub Tropical Forest of Arunachal Pradesh. Rainfall varies from 1000mm in higher reaches to 5750mm in the foot-hill areas, spread over 8-9 months excepting the drier days in winter .

This diversity of topographical and climatic conditions has favoured the growth of luxuriant forests which  are home to myriad plant and animal forms adding beauty to the landscape. Living in this incredible cradle of nature are the colourful and vibrant tribes of Arunachal Pradesh for whom the forests and the wildlife are of special significance.

Nature has been exceedingly kind and has endowed this beautiful State of Arunachal Pradesh with diverse forests and magnificent wildlife. The richness of life forms i.e. the flora & fauna that occur in these forests presents a panorama of biological diversity with over 5000 plants, about 85 terrestrial mammals, over 500 birds and a large number of butterflies, insects and reptiles. Such an unparalleled occurrence of life forms can be attributed to the peculiar location of the State which is at the junction of the Paleoarctic, indo-Chinese, and Indo-Malayan bio-geographic regions , Biotic elements from all these regions occur in this state making it very rich in floral & faunal resources.

The vegetation of Arunachal Pradesh falls under four broad climatic categories and can be classified in five broad forest types with a sixth type of secondary forests.  These are tropical forests, sub tropical forests, pine forests, temperate forests and alpine forests.  In the degraded forests bamboos and other grasses are of common occurrence.

State Animal      Mithun (Bos Frontails)

State Bird            Hornbill

State Orchid       Rynchostylis Retusa

National Park     Two

Wildlife Sanctuaries        Eight

Orchid Sanctuary              One

Biosphere Reserve          One(Dehang Dibang Biosphere Reserve)