The black panther,[9] elephants and tigers live in the park but are rarely seen. Other large mammals here are Indian bison, sloth bear, Indian wild boar, bonnet macaque, northern plains grey langur, grey slender loris, several deer including: barking deer (muntjac), mouse deer (chevrotain), sambar deer and spotted deer (chital or axis deer).
Wild dog, jackal, jungle cat, leopard cat, small Indian civet, Indian grey mongoose, flying squirrel, porcupine, Malabar civet, Indian giant squirrel and pangolin also make their home in the forests here.
Reptiles in the park include the king cobra, spectacled cobra, Russell's viper, saw-scaled viper, common krait, Indian rock python, rat snake, vine snake, green or bamboo pit viper and monitor lizards.
Interesting birds include the Ceylon frogmouth, great hornbill, Malabar pied hornbill, Malabar grey hornbill, Indian grey hornbill and Asian fairy bluebird. Around 200 species of birds are recorded in the park. These include the distinctive adjutant stork, ashy woodswallow, black-crested bulbul, blue-headed pitta, brahminy kite, broad-billed roller, crested serpent eagle, great hornbill, golden-backed woodpecker, Malabar pied hornbill, Sri Lanka frogmouth and yellow-footed green pigeon.[8]