Namdapha Tiger Reserve and National Park at the eastern tip of India is probably the last true wilderness you will find anywhere in the world. Thick, impenetrable tropical rain forest growth forms the core of this natural paradise. Declared a Tiger Reserve in 1983, the majestic gaur, mithun, elephant, Himalayan black bear, taking the wild goat peculiar to the Patkoi range, musk deer, slow loris, binturong and the red panda are all found here. The predators include the tiger, leopard, the rare snow leopard and clouded leopard in the higher reaches of the hills. A number of primate species are to be seen in the Park, such as the Assamese macaque, pig-tailed macaque, stump-tailed macaque and the distinctive hoolock gibbon. Hornbills, jungle fowl and pheasants flap their noisy way through the jungle, which harbours other colourful bird species. The inaccessibility of the greater part of the Park has helped to keep the forests in their pristine state.

Namdapha is a botanical haven, with over 150 tree species and many flowers and orchids, including the Blue Vanda, one of the rarest orchids. Namdapha's birdlife includes the satyr tragopan, kalij and monal pheasants, giant hornbill, forest eagle owl and the rare white-winged wood duck. Principal reptiles include the Indian python, reticulated python and king cobra.