Parambikulam Wildlife Sanctuary Parambikulam has one of the largest population of gaur (bison).
Fauna includes Sambar, spotted deer, jungle cat, lion-tailed macaque, common otter, sloth bear etc. are the other inhabitants. There are also a few tigers and leopards.
The rich fauna includes Bonnet Macaques, Tigers, Spectacled Cobras, Kraits, Vipers, Turtles, Darters, Little Cormorants and Black Eagles. The place is ideal for boating and trekking.