Illinois frogs and toads: ID chart
22 frogs and toads. Last checked November 3, 2026.
The frogs and toads are listed from A to Z, each with a photo where we have one and a short note on where it lives in Illinois. The chart prints on letter or A4 paper; on screen, open any name on the Illinois frogs and toads page for photos, range and sources.
American Bullfrog
Lithobates catesbeianus
Not stated
American Toad
Anaxyrus americanus
Not stated
Bird-voiced Treefrog
Hyla avivoca
Not stated
Blanchard's Cricket Frog
Acris blanchardi
Not stated
Boreal Chorus Frog
Pseudacris maculata
Not stated
Cope’s Gray Treefrog
Hyla chrysoscelis
Not stated
Eastern Narrow-mouthed Toad
Gastrophryne carolinensis
Not stated
Eastern Spadefoot
Scaphiopus holbrookii
Not stated
Fowler’s Toad
Anaxyrus fowleri
Not stated
Green Frog
Lithobates clamitans
Not stated
Illinois Chorus Frog
Pseudacris illinoensis
Not stated
Plains Leopard Frog
Lithobates blairi
Not stated
Southern Leopard Frog
Lithobates sphenocephalus
Not stated
Upland Chorus Frog
Pseudacris feriarum
Not stated
Western Chorus Frog
Pseudacris triseriata
Not stated
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A picture cannot confirm what an animal is or that it is safe. Never handle a wild animal. Sources: Wild About Illinois Frogs and Toads! (gallery by family and species) (IDNR); American Toad (Field Guide to Amphibians and Reptiles of Illinois) (Illinois Natural History Survey (INHS), Prairie Research Institute, University of Illinois Urbana-Champaign); Fowler's Toad (Field Guide to Amphibians and Reptiles of Illinois) (Illinois Natural History Survey (INHS), Prairie Research Institute, University of Illinois Urbana-Champaign); Blanchard's Cricket Frog (Field Guide to Amphibians and Reptiles of Illinois) (Illinois Natural History Survey (INHS), Prairie Research Institute, University of Illinois Urbana-Champaign); Bird-voiced Treefrog (Field Guide to Amphibians and Reptiles of Illinois) (Illinois Natural History Survey (INHS), Prairie Research Institute, University of Illinois Urbana-Champaign); Gray Treefrog Complex (Field Guide to Amphibians and Reptiles of Illinois) (Illinois Natural History Survey (INHS), Prairie Research Institute, University of Illinois Urbana-Champaign); and others listed on the web page. stateswildlife.com/illinois/frogs-toads/