State herp calendar
Reptiles and Amphibians of Delaware
Delaware is low coastal plain with marshes, farm ponds and bays. Fowler's Toads are the most-reported herp. Painted Turtles and Northern Red-bellied Cooters bask in the ponds. April is the busiest month, and no venomous snakes made the list here.
28 species1 ecoregion
Search entire stateSpecies out across Delaware, by group and month
| Group | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Snakes | 1 | 5 | 7 | 7 | 7 | 6 | 6 | 6 | 5 | 4 | 1 | |
| Lizards | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | ||||
| Turtles | 2 | 5 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 2 | ||
| Frogs and Toads | 4 | 7 | 10 | 11 | 9 | 9 | 9 | 9 | 8 | 1 | ||
| Salamanders | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 2 | 2 | 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.
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Ecoregions of Delaware
Seasons shift a lot between Delaware's ecoregions. Pick the one nearest you for a 12-month calendar of what's out.
About Delaware
When are reptiles and amphibians most active in Delaware?
April is the busiest month in Delaware, with 23 species at peak activity. At least half of the area's species are active from March through October.
What reptiles and amphibians live in Delaware?
28 species have enough iNaturalist records to show here: 11 frogs and toads, 7 snakes, 6 turtles, 2 salamanders, and 2 lizards. The most-reported are the Fowler's Toad, Painted Turtle, and Green Frog.
Are there venomous snakes in Delaware?
No venomous snakes have enough records in Delaware to make this list.
Which reptiles and amphibians in Delaware 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.