State herp calendar
Reptiles and Amphibians of New Jersey
New Jersey packs pine barrens, coastal marsh and northern hills into a small state. Green Frogs and Painted Turtles are the most-reported herps. Fowler's Toads call on warm spring nights. May is the busiest month, and the Eastern Copperhead lives here.
48 species4 ecoregions1 venomous
Search entire stateSpecies out across New Jersey, by group and month
| Group | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Snakes | 1 | 8 | 14 | 15 | 15 | 15 | 14 | 13 | 12 | 5 | 2 | |
| Lizards | 1 | 3 | 4 | 4 | 4 | 4 | 4 | 3 | 2 | 1 | ||
| Turtles | 3 | 6 | 6 | 7 | 7 | 7 | 6 | 6 | 6 | 2 | ||
| Frogs and Toads | 5 | 10 | 12 | 12 | 11 | 12 | 12 | 11 | 10 | 4 | ||
| Salamanders | 2 | 4 | 6 | 9 | 8 | 6 | 5 | 6 | 8 | 7 | 4 | 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 New Jersey
Seasons shift a lot between New Jersey's ecoregions. Pick the one nearest you for a 12-month calendar of what's out.
New England Coast and Pine Barrens
33 speciesCoastal woods, pine barrens and ponds with painted turtles and spring frogs.
View calendar →Piedmont
68 speciesRolling hills and suburbs where toads, anoles and ratsnakes are part of daily life.
View calendar →Mid-Atlantic Coastal Plain
55 speciesLow pine woods, swamps and bays with treefrogs, toads and turtles.
View calendar →New England Highlands
25 speciesNorthern hardwood hills where newts, wood frogs and salamanders wake with the thaw.
View calendar →Venomous here: Eastern Copperhead. Don't handle any snake you can't identify.
About New Jersey
When are reptiles and amphibians most active in New Jersey?
May is the busiest month in New Jersey, with 39 species at peak activity. At least half of the area's species are active from March through October.
What reptiles and amphibians live in New Jersey?
48 species have enough iNaturalist records to show here: 15 snakes, 13 frogs and toads, 9 salamanders, 7 turtles, and 4 lizards. The most-reported are the Green Frog, Painted Turtle, and Fowler's Toad.
Are there venomous snakes in New Jersey?
Yes. The Eastern Copperhead lives here. Don't handle them.
Which reptiles and amphibians in New Jersey are introduced?
The Pond Slider and Italian Wall Lizard are 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.