Located on the catchments of the Peppara Dam on the Karamana River is the Peppara Wildlife Sanctuary, which is 50 km northeast of Trivandrum.
The Sanctuary is home to a variety of animals from Tiger, Leopard, Sloth Bear, Elephant, Sambar (deer), Bonnet Macaque, Nilgiri Langur & Nilgiri Tahr.
There are around 13 species of amphibians & 27 species of fish also found here.
The best time to visit the Sanctuary is from Jan - March. The park remains open throughout the year.
There are some interesting trekking routes too, like a trek to Bonafalls, Vazahuvanthole water falls, & Kalarkad waterfalls. It is advised to take a local guide on your trek.