State herp calendar
Reptiles and Amphibians of Indiana
Indiana is farmland in the middle, dunes up north and hills down south. American Toads and Eastern Red-backed Salamanders are the most-reported herps. Southern Two-lined Salamanders live along streams. May is the busiest month, and the Eastern Copperhead lives here.
47 species3 ecoregions1 venomous
Search entire stateSpecies out across Indiana, by group and month
| Group | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Snakes | 2 | 5 | 12 | 13 | 13 | 11 | 11 | 9 | 7 | 4 | ||
| Lizards | 1 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | ||||
| Turtles | 3 | 4 | 6 | 6 | 6 | 6 | 6 | 5 | 2 | 1 | ||
| Frogs and Toads | 8 | 10 | 12 | 12 | 11 | 11 | 10 | 10 | 9 | 4 | ||
| Salamanders | 2 | 9 | 11 | 13 | 11 | 10 | 3 | 4 | 5 | 6 | 3 | 2 |
Numbers = species active that month (at peak or just starting / winding down).
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Hi, I'm Nick. I built Herp Calendar on my own and I keep it free, with no ads. If it has helped you find a herp this season, a small tip goes straight into the hosting and the data work. Only if you can spare it. Either way, I'm glad you're here.
Pick your ecoregion
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Tap a region to see what's out
Ecoregions of Indiana
Seasons shift a lot between Indiana's ecoregions. Pick the one nearest you for a 12-month calendar of what's out.
Corn Belt Midwest
37 speciesFarm country with ponds and parks full of toads, painted turtles and garter snakes.
View calendar →Great Lakes Shore
31 speciesLakeshore marshes and dunes with painted turtles, toads and garter snakes.
View calendar →Interior Low Plateaus
63 speciesRolling hills, caves and streams with toads, ratsnakes and pond sliders.
View calendar →Venomous here: Eastern Copperhead. Don't handle any snake you can't identify.
About Indiana
When are reptiles and amphibians most active in Indiana?
May is the busiest month in Indiana, with 40 species at peak activity. At least half of the area's species are active from March through October.
What reptiles and amphibians live in Indiana?
47 species have enough iNaturalist records to show here: 13 salamanders, 13 snakes, 12 frogs and toads, 6 turtles, and 3 lizards. The most-reported are the American Toad, Eastern Red-backed Salamander, and Green Frog.
Are there venomous snakes in Indiana?
Yes. The Eastern Copperhead lives here. Don't handle them.
Where does this data come from?
Activity calendars are built from iNaturalist research-grade observations (downloaded through GBIF, September 2026), corrected for how many people are out observing each month. Rare and protected species are left off on purpose.