Animals in Illinois

Illinois boasts diverse geological terrains that include fertile prairies, rolling hills, and rich wetlands. This has given the state’s wildlife ample opportunities to grow and prosper.

The Mississippi River flowing along the state’s western border further enhances the biodiversity, providing a habitat for numerous waterfowl and aquatic creatures.

Several wildlife reserves, including the Shawnee National Forest and the Midewin National Tallgrass Prairie, offer a chance to watch the state’s wildlife.

Animals in Illinois (IL)

List of Different Types of Animals Found in Illinois






  • Bluegill
  • Blue Catfish
  • Channel Catfish
  • Coho Salmon
  • Crappie
  • Green Sunfish
  • Lake Sturgeon
  • Largemouth Bass
  • Longnose Gar
  • Muskellunge
  • Northern Pike
  • Redear Sunfish
  • Sea Lamprey
  • Smallmouth Bass
  • Striped Bass
  • Sauger
  • Walleye
  • Yellow Perch

Insects and Invertebrates

  • Monarch Butterfly
  • Black Swallowtail
  • Western Honey Bee
  • Ant-like Longhorn Beetle
  • Box Elder Beetles
  • Black Ant
  • Carpenter Ant
  • Fire Ant
  • Hover Fly
  • Fruit Fly
  • Silverfish
  • Clover Mite
  • Centipede
  • Wolf Spider
  • Bold Jumping Spider
  • Brown Recluse
  • Black Widow
  • Black And Yellow Garden Spider
Illinois State Animals

State Animals of Illinois

State AnimalWhite-tailed Deer
State HorseThoroughbred Horse
State BirdNorthern Cardinal
State ReptilePainted Turtle
State SnakeEastern Milk Snake
State AmphibianEastern Tiger Salamander
State FishBluegill
State InsectMonarch Butterfly


What are the most dangerous animals in Illinois?

The deadliest animals in Illinois include large and medium carnivores like black bears, cougars, gray wolves, and coyotes. Venomous snakes and spiders like eastern Massasauga rattlesnakes, black widows, and brown recluses are also quite dangerous for humans.

What are some of the rarest animals in Illinois?

The gray wolf, bald eagle, osprey, peregrine falcon, Jefferson’s salamander, and mudpuppy are some rare animals in the state because their populations are classified as threatened or endangered.

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