State herp calendar
Reptiles and Amphibians of Maryland
Maryland runs from Appalachian ridges to the Chesapeake Bay. Pond Sliders and Painted Turtles are the most-reported herps. American Toads and Green Frogs are common. April is the busiest month. The Eastern Copperhead and Timber Rattlesnake live here.
54 species5 ecoregions2 venomous
Search entire stateSpecies out across Maryland, by group and month
| Group | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Snakes | 2 | 4 | 10 | 17 | 17 | 17 | 17 | 16 | 16 | 11 | 9 | 3 |
| Lizards | 1 | 2 | 4 | 4 | 3 | 3 | 4 | 4 | 2 | 1 | ||
| Turtles | 3 | 5 | 6 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 3 | 3 |
| Frogs and Toads | 1 | 8 | 11 | 13 | 11 | 11 | 11 | 11 | 11 | 11 | 8 | |
| Salamanders | 3 | 8 | 12 | 13 | 11 | 9 | 8 | 9 | 10 | 10 | 6 | 3 |
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 Maryland
Seasons shift a lot between Maryland's ecoregions. Pick the one nearest you for a 12-month calendar of what's out.
Mid-Atlantic Coastal Plain
55 speciesLow pine woods, swamps and bays with treefrogs, toads and turtles.
View calendar →Piedmont
68 speciesRolling hills and suburbs where toads, anoles and ratsnakes are part of daily life.
View calendar →Central Appalachians
54 speciesForested ridges and hollows full of salamanders, with ratsnakes on the rocks.
View calendar →Southeastern Plains
86 speciesLongleaf pine, swamps and farmland with the biggest species list on the site.
View calendar →Blue Ridge Mountains
61 speciesSalamander country: wet coves, cold streams, and more salamanders than anything else.
View calendar →Venomous here: Eastern Copperhead, Timber Rattlesnake. Don't handle any snake you can't identify.
About Maryland
When are reptiles and amphibians most active in Maryland?
April is the busiest month in Maryland, with 47 species at peak activity. At least half of the area's species are active from March through November.
What reptiles and amphibians live in Maryland?
54 species have enough iNaturalist records to show here: 17 snakes, 13 frogs and toads, 13 salamanders, 7 turtles, and 4 lizards. The most-reported are the Pond Slider, Painted Turtle, and American Toad.
Are there venomous snakes in Maryland?
Yes. The Eastern Copperhead and Timber Rattlesnake live here. Don't handle them.
Which reptiles and amphibians in Maryland are introduced?
The Pond Slider is not native here.
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.