Those were made owing to its significance for conservation of Asian elephants, gaur or Indian "bison" and golden langur, all of which have large populations in the area.

[citation needed] It is a part of a contiguous forest patch with an area of 422 km2 (163 sq mi) covering the northern part of the notified Ripu Reserve Forest with 508.62 km2 (196.38 sq mi), which forms the westernmost buffer to Manas Tiger Reserve in the foothills of Eastern Himalaya Biodiversity Hotspot.

[citation needed] Raimona National Park is home to slow loris, Assamese macaque, Rhesus monkey and golden langur.

[5] It also harbours Chinese pangolin, dhole, Himalayan black bear, crab-eating mongoose, jungle cat, leopard cat, Asian golden cat, Bengal tiger, leopard, clouded leopard, Asian elephant, gaur, Himalayan serow, sambar, chital, hog deer, barking deer, Himalayan porcupine and hispid hare.

[7] Avifauna includes white-bellied heron, swamp francolin, pheasant, grey peacock pheasant, Indian peafowl, Oriental darter, lesser adjutant, collared falconet, slender-billed vulture, white-backed vulture, besra, black baza, Jerdon's baza, osprey, Bengal florican, now perhaps extirpated, ibisbill, green imperial pigeon, mountain imperial pigeon, red-breasted parakeet, great pied hornbill, occasional rufous-necked and Indian grey hornbills, wreathed hornbill, hill myna and scaly thrush.