There are more than 2000 species of fauna that are found in Tamil Nadu.
The mammals found in Tamil Nadu include the
Asian elephant, Bengal tiger, Indian leopard, sloth bear, gaur, Manjampatti white bison, wild boar, lion-tailed macaque, Nilgiri langur, common langur, bonnet macaque, Nilgiri tahr, four-horned antelope, dhole, tree shrew, sambar deer, mouse deer, muntjac, jungle cat, fishing cat, leopard cat, small Indian civet, toddy cat, Asian small mongoose, blackbuck, chital, striped hyena, Nilgiri marten, Travancore flying squirrel, grizzled giant squirrel, flying squirrel, three-striped palm squirrel, black-naped hare, grey slender loris, Indian pangolin, Asian small-clawed otter and Malabar spiny dormouse, Indian fox, bare-bellied hedgehog, Indian porcupine, smooth-coated otter.