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The fauna of Illinois include a wide variety of mammals, birds, amphibians, reptiles, fish and insects (not listed).

• The state bird is the Northern cardinal.
• The state insect is the monarch butterfly.
• The state animal is the white-tailed deer.
• The state fish is the bluegill.
• The state fossil is the tully monster.
• The state amphibian is the eastern tiger salamander.
• The state reptile is the painted turtle.
• The state snake is the eastern milk snake.

• http://www.inhs.illinois.edu/animals_plants/birds/ilbirds.html
• http://www.inhs.illinois.edu/cbd/collections/mammal/ilmammals.html
• http://www.inhs.illinois.edu/animals_plants/herps/ilspecies.html
• http://www.ifishillinois.org/species/species.html