The Idukki Wildlife Sanctuary is situated between two rivers Cheruthoni and Periyar. This is one of the most beautiful wildlife sanctuaries in Kerala and is situated at a distance of 40 km from Thodupuzha and spread over 105.364 sq kilometers. Situated at an altitude of 450-748 m above sea level, this sanctuary occupies the forest land between the Cheruthoni and Periyar rivers. There is a scenic lake around the sanctuary, covered by an enchanting canopy of tropical ever-green and deciduous trees, and offers boat rides.The sanctuary is home to a wide range of wildlife. Trekking is possible within the forest with prior permission from the forest department. You can also enjoy boat rides in the rivers which provide a panoramic view of the surroundings.
The wildlife of Idukki includes animals such as Sambhars, Wild Dogs, Jungle Cats, Tigers ,Elephants, bison, sambar deer, wild boar etc. are seen here apart from various species of snakes including cobra, viper, kraits and numerous non-poisonous ones. Birds include grey jungle fowl, Malabar grey hornbill, several species of woodpeckers, bulbuls, flycatchers, etc. The wildlife here is similar to that of Thekkady. This sanctuary lies adjacent to the world renowned Idukki Arch Dam.