Sprawls over an area of 223 Sq.Kms from Papanasam hills to Kalkad, Kalakkadu Sanctuary is a tiger reserve center located at a distance of 47kms from Thirunelveli. The sanctuary is placed in the picturesque and geographically rich surroundings of Western Ghats. Some of the wild life seen in this sanctuary are common Langur, Nilgiri Tahr, Sambar, Sloth, Bear, Gour, Elephant, Tiger, Flying Squirrel, Panther, Wild Dog etc. Besides these, a wide range of birds and reptiles can also be seen. Egrets, herons, jungle fowl, spur fowl, partridge, quails, emerald dove, minivets, bee caters, night jars, paradise flay catchers, large racket-tailed dronge, spotted babbler are some among them. Best season to visit the sanctuary is from September to March.