Chinnar Wildlife Sanctuary is located 18 km north of Marayoor on State Highway 17 in the Marayoor and Kanthalloor panchayats of Devikulam taluk in the Idukki district of Kerala state in South India.
There are 963 species of flowering plants in the sanctuary.[7] Ecoregions of the sanctuary comprise mostly grassland and wet grasslands vegetation and some South Western Ghats montane rain forests and high shola at the higher western elevations. The sanctuary's fauna comprises 28 mammal species, including Indian leopard and spotted deer, Indian elephant, gaur, Bengal tiger, sambar deer, common langur, bonnet macaque. 225 bird species including yellow-throated bulbul, 52 reptile species including 29 species of snakes, Indian star tortoise and the largest population of mugger crocodiles in Kerala, 14 fish species observed in the Chinnar and Pambar rivers include Garra mullya, river-carp baril, giant danio and the endangered hill stream game fish Deccan mahseer, and 15 amphibian species.