Illinois’s Official State Animals: A Comprehensive Guide

Illinois, a state rich in natural beauty and diverse ecosystems, has designated nine official state animals to represent its unique wildlife. From the iconic Northern Cardinal to the often-overlooked Eastern Milksnake, these symbols reflect the state’s commitment to conservation and appreciation for its natural heritage. This article explores each of Illinois’s official state animals, detailing their characteristics, habitats, and the reasons behind their selection.

1. State Snake: Eastern Milksnake

In 2022, the Illinois General Assembly officially adopted the Eastern Milksnake (Lampropeltis triangulum triangulum) as the state snake. This designation came about through a collaborative effort with a seventh-grade student from Carterville Junior High School. The Eastern Milksnake plays a vital role in controlling rodent populations in both agricultural and suburban environments, making it an essential component of Illinois’s ecosystems.

Primarily found in the northern third of Illinois, these non-venomous snakes can grow to nearly 4 feet in length and are distinguished by their reddish-brown and black markings on a grey or white body. They inhabit wooded areas, rocky hillsides, fields, and riverbeds, often seeking shelter under rocks and logs or overwintering in abandoned mammal burrows. Their diet consists of small mammals, reptiles, amphibians, birds, and fish.

2. State Amphibian: Eastern Tiger Salamander

The Eastern Tiger Salamander (Ambystoma tigrinum) was chosen as Illinois’s official state amphibian in 2004, following a vote by Illinois citizens and approval by the General Assembly in 2005. It is the largest salamander species found within the state and is widespread throughout Illinois.

Eastern Tiger Salamanders are characterized by their bluish-black or brownish-black skin adorned with yellow spots. Adults typically measure between 7 and 8.5 inches, though some can reach up to 13 inches. They thrive in shallow ponds, marshes, wet prairies, and forested areas near large lakes and rivers. Their diet includes small insects like worms, snails, and crickets, as well as frogs and other small animals.

3. State Animal: White-Tailed Deer

The White-Tailed Deer (Odocoileus virginianus) holds the honor of being Illinois’s official state animal, selected by schoolchildren in 1980 and formally recognized by the General Assembly in 1982. As the only deer species native to Illinois, it can be found in every county within the state.

White-tailed deer typically inhabit heavily wooded areas but can also be found near urban environments. They are characterized by their reddish-brown coats (turning greyish in winter), fluffy white tails with black tips, and large ears. Weighing between 100 and 300 pounds, they primarily feed on grasses, herbs, twigs, tree bark, nuts, and fruits. Managing white-tailed deer populations can be challenging due to their tendency to raid crops and their high population densities in certain areas.

4. State Fish: Bluegill

The Bluegill (Lepomis macrochirus) is Illinois’s official state fish, chosen by Illinois schoolchildren in 1986. This popular game fish is valued for its size, abundance, and palatable flavor.

Bluegills are easily identified by their flattened bodies, greenish backs and sides, and yellow to white bellies, along with long, pointed pectoral fins. They typically average 0.25 pounds and 8 to 10 inches in length, with the state record exceeding 3 pounds and 8 ounces. They prefer clear, warm waters with abundant aquatic plants and are found in rivers, lakes, ponds, creeks, and swamps throughout Illinois.

5. State Insect: Monarch Butterfly

The Monarch Butterfly (Danaus plexippus) was designated as Illinois’s state insect in 1975, following a proposal by third-grade students at Dennis School in Decatur. Their selection was based on the butterfly’s widespread presence, striking appearance, and crucial role as a pollinator.

Monarch butterflies are large, orange and black insects with white markings, boasting wingspans of 4 to 5 inches. They are visible in Illinois from late May through early October, inhabiting prairies, wetlands, forests, meadows, and gardens. These butterflies are renowned for their annual migration from the U.S. And Canada to the mountains of Central Mexico.

6. State Pet: Shelter Dogs and Cats

Illinois recognizes the importance of pet adoption by designating shelter dogs and cats as the official state pets, effective August 25, 2017, through legislation sponsored by Representative Sue Scherer. This designation aims to raise awareness about the needs of homeless animals and encourage adoption from shelters and rescue facilities.

7. State Reptile: Painted Turtle

The Painted Turtle (Chrysemys picta) became Illinois’s official state reptile in 2005, following a vote by citizens in 2004 and approval by the General Assembly. These turtles are commonly found in shallow water bodies with muddy bottoms and plentiful aquatic plants throughout the state.

Painted turtles typically measure 5 to 7 inches in length, with females being larger. They have dark skin and smooth, dark shells with red, yellow, and black patterns along the edges. Distinctive features include yellow stripes on their heads and necks, reddish-orange stripes on their arms, and a dark pattern on their yellow undersides. Males have notably long front claws used during courtship and mating.

8. State Bird: Northern Cardinal

Illinois holds the distinction of being the first state to officially designate a state bird, choosing the Northern Cardinal (Cardinalis cardinalis) in 1929, following a vote by schoolchildren. These birds are common throughout Illinois and can be observed year-round.

Northern Cardinals are medium-sized songbirds easily identified by the bright red plumage of males. Females exhibit a more subdued greyish-brown coloration with reddish highlights. They are omnivorous, consuming both seeds and insects, and are frequently found in open woodlands, parks, gardens, and residential areas.