Thekkady, better known as Tiger Reserve is a rich diversity of vertebrates. The diverse forest types, vayals, marshes, and a large aquatic habitat together support 62 species of mammals, 320 species of birds, 45 species of reptiles, 27 species of amphibians, and 38 species of fishes. The pride of Kerela and a testimony to nature's splendor and human innovation, the Periyar Wildlife Sanctuary is situated on the banks of the Periyar lake - an artificial lake, at Thekkady. The drive to Thekkady itself as enchanting as the road winds the high ranges.
Wild animals like the Elephant, Gaur, Sambar Deer and wild boar, which can be easily seen from close quarters during the serene boat ride. Other Mammals like the Nilgiri Thar, the lion tailed macaque, the bonnet macaque, the Malabar giant Squirrel, the flying Squirrel, the Tiger, the jungle cat and the sloth bear are seen only once in a while. Around 265 different species of birds like the Hornbill, stork, woodpecker, kingfisher, raptor, cormorant, grackle, darter etc. can also be seen.