Sambar deer
Mammals: 36 mammal species have been recorded, of which 12 are listed in Schedule 1 of the Wildlife (Protection) Act of 1972. Species include Bengal tiger, Indian leopard, clouded leopard, jungle cat, sloth bear, dhole, small Indian civet, Malayan giant squirrel, Chinese pangolin, Gangetic dolphin, slow loris, pig tailed macaque, Assamese macaque, rhesus macaque, capped langur, Hoolock gibbon, Asian elephant, wild boar, Sambar deer, hog deer, barking deer, Asiatic water buffalo, and feral horse. The park is one of the few places in the world which is home to feral horses. They are descendants of horses who bolted out of stables set up by British Army in and around Tinsukia during World War II.