Forest Wildlife in the area includes the Asiatic Elephant, Tiger, Leopard, Bison, Sambar and Lion-Tailed Macaque.
The unique 180 meters (590 ft) elevation riparian forest in the Athirappilly-Vazhachal area is the only location where all four South Indian Spices of Hornbills - the Great Hornbill (the State Bird of Kerala), Malabar Pied Hornbill, Malabar Grey Hornbill and the Indian Grey Hornbill are found living together.
The river provides habitat for 85 species of fresh water fishes. Among these, 35 are endemic species. This place is the best place to find most animals in the wild.