Peppara Wildlife Sanctuary is located in Nedumangad taluk of Thiruvananthapuram district. Topographically mountainous, the wildlife sanctuary expands over an area of 53 sq. km Peppara Wildlife Sanctuary encapsulates dense forests and the Peppara dam built on the Karamana River to multiply the supply of drinking water to Thiruvananthapuram and its neighboring suburbs. Peppara was avowed as a sanctuary in 1983. Peppara Wildlife Sanctuary merges gracefully with the Palode reserve (24sq.kms) and the Kottoor reserve (29sq.kms). These three together shape the entire area covered by the Peppara Wildlife Sanctuary.

Peppara Wildlife Sanctuary accommodates wildlife species like: Tiger, Panther, Wild Dog, Lion Tailed Macaque, Elephant, Gaur, Deer, Mouse Deer, Wild Boar, Nilgiri Langur, Malabar Squirrel etc. The bird species especially the water birds like Darter, little Cormorant, Pied King Fisher and Egrets are most commonly seen in the sanctuary. Several species of snakes including the king cobra and python are dominantly present in this sanctuary. The Peppara Wildlife Sanctuary is also famous for its wide variety of moth and butterflies.

Peppara Wildlife Sanctuary primarily consists of three major forest belts- Southern hilltop tropical evergreen forests rising to above 1000m; West coast semi- evergreen forests that stand from 150 to 1050m; Southern moist mixed deciduous forests occupy the lower slopes of the hills covering more than 60% of the total forest area.