This park was originally created to help preserve the habitat of the rare White-Winged Wood Duck, is sprawled over a 650 square kilometer area in the Tinsukia District of Assam. Situated on the south-bank of River Brahmaputra, the Dibru-Saikhowa national Park is located on the extreme eastern end of Assam. One of the most vibrant wilderness on earth, it has a distinct and pristine unmatched scenic beauty, and which is also a perfect heaven for many extremely rare and endangered species of wildlife. The terrain comprises of semi-evergreen forests, deciduous forests, littoral and swamp forests weaved with parches of wet evergreen forests. This area enjoys a tropical monsoon climate with hot and wet summers, and cool and dry winters. June, July, August & September are as if they are just made for rains, moreover, the park also falls within the Brahmaputra flood-plains.
The rich fauna consists of 36 species of mammals, of which 12 are endangered and listed in the schedule. Wildlife includes the Royal Bengal Tiger, Leopard, Clouded Leopard, the Jungle Cat, Sloth Bear, Small Indian Civet, Malayan Giant Squirrel, Chinese Pangolin, Gangetic Dolphin, Slow Loris, Pig Tailed Macaque, Assamese Macaque, Rhesus Macaque, Capped Langur, the Hollock Gibbon, the Asian Elephant, Wild Boar, Sambar, the Hog Deer, Barking Deer, Asiatic Water Buffalo, Feral Horses and many others. Two species of Monitor Lizards, 8 species of Turtles and 8 species of Snakes along with 62 different species of Fishes and over 350 species of Birds have been recorded in the Dibru-Saikhowa National Park.
Night halts and picnics within the park are strictly prohibited and entry restricted to two points at the Guijan and Saikhowa Ghats. This park is generally open for tourists from November to April; however, written permission from the park authorities is obligatory for entering the Dibru-Saikhowa National Park which can be obtained from the Divisional Forest Office (DFO) (Wildlife Division) at Tinsukia Town, which also happens to be the district headquarters and the nearest urban settlement to the park.
Dibru-Saikhowa Feral Horses: The feral horses within this National Park are those horses that escaped during the World War II, and are now living wild. The Army Camps set during that period owned them, while this set of 79 horses are the third, or the fourth generations of those tamed army horses originally escaped into the wild. However, some more horses which also form a part within this group are those which were left loose during the 1950 earthquake that shook this part of the sub-continent.