Sonanadi Wildlife Sanctuary is blessed with a surprise package loaded with various faunas, when it comes to the fauna part. The sanctuary is match with the typical North Indian tropical forests. The plant life of the sanctuary is rich in different species of Sal, Sheesham, Semal, Bakli, Aonla, Jamun, Kanthber, Figs and along with medicinal plants and some endangered species of Herbs and Shrubs. The Wildlife reserve is the shelter to about 600 types of resident and migratory birds. The diversity of avifauna in Sonanadi Sanctuary represents approximately 6% of the total bird species in the world. The profuse gathering of bird species in the sanctuary offers a prospect to view 150 species of birds in a limited visit in Sonanadi Sanctuary. The kinds of Birds normally seen here are, Thrushes, Pheasants, Hornbills, Warblers, Flycatchers, Wall Creeper, Changeable Hawk Eagle, emerald Dove, Himalayan Bearded Vulture, Falcon, Brown Fish Owls, etc.

Mammals found in the wildlife sanctuary are Leopard, Sambhar, Cheetal, Barking Deer, Wild Boar, Goral, Otter, Porcupine, Yellow-Throated Marten and Sloth Bear. The giants like Elephants and Tigers are favorites among the visitors. A large display of reptiles like Python, Monitor Lizard, King Cobra, Different kind of Turtles, Gharials, Mugger, Mahaseer, and Indian Trout etc. Corbett National Park and Sonanadi Wildlife Sanctuary together comprise the Corbett Tiger Reserve which hosts the second largest population of Tiger-Panther Tigris in the world. The rare sightings of Himalayan Black Bear and Albino Cheetal are also recorded in Sonanadi Wildlife Sanctuary.