Regional Overview Chart
| Region | Terrain | Most Abundant Mammal | Most Abundant Bird | Most Abundant Fish | Rare Species |
|---|---|---|---|---|---|
| Appalachian Ohio | Forested hills | White‑Tailed Deer | Wild Turkey | Smallmouth Bass | Bobcat |
| Lake Erie Basin | Wetlands, shoreline | Gray Squirrel | Ring‑Billed Gull | Walleye | Piping Plover |
| Central Till Plains | Farmland, rivers | Raccoon | Northern Cardinal | Channel Catfish | Indiana Bat |
| Western Lake Plains | Prairies, agriculture | Eastern Cottontail | Red‑Winged Blackbird | Bluegill | Eastern Massasauga |
Sources — Regions
ODNR Ecoregions — https://ohiodnr.gov The Nature Conservancy Ohio — https://www.nature.org