Statewide

New Jersey Reptiles and Amphibians by Month

Every reptile and amphibian with enough records anywhere in New Jersey, counted from observations inside the state line. Seasons can differ a lot across the state, so for a closer match, pick your ecoregion on the New Jersey page.

48 species1 venomous

Peak and shoulder ratings are rough guidance, not a schedule. Weather, elevation and the year can shift any species by weeks.

Rare and protected species are left off on purpose. Look, don't take, and never handle a venomous snake.

Species out in 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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41 species at peak or shoulder in September

peak

Frogs and ToadsAmerican BullfrogLithobates catesbeianus

peak

Frogs and ToadsAmerican ToadAnaxyrus americanus

peak

SnakesCentral RatsnakePantherophis alleghaniensis

peak

SnakesCommon Garter SnakeThamnophis sirtalis

peak

SnakesCommon Ribbon SnakeThamnophis saurita

peak

SnakesDeKay's BrownsnakeStoreria dekayi

peak

SnakesEastern CopperheadAgkistrodon contortrix

venomous

peak

LizardsEastern Fence LizardSceloporus undulatus

peak

SnakesEastern Hognose SnakeHeterodon platirhinos

peak

SnakesEastern MilksnakeLampropeltis triangulum

peak

TurtlesEastern Musk TurtleSternotherus odoratus

peak

SalamandersEastern NewtNotophthalmus viridescens

peak

SalamandersFour-toed SalamanderHemidactylium scutatum

peak

Frogs and ToadsGray TreefrogDryophytes versicolor

peak

Frogs and ToadsGreen FrogLithobates clamitans

peak

Frogs and ToadsGreen TreefrogDryophytes cinereus

peak

SalamandersMarbled SalamanderAmbystoma opacum

peak

SnakesNorth American RacerColuber constrictor

peak

Frogs and ToadsNorthern Cricket FrogAcris crepitans

peak

SalamandersNorthern Dusky SalamanderDesmognathus fuscus

peak

SalamandersNorthern Slimy SalamanderPlethodon glutinosus

peak

SalamandersNorthern Two-lined SalamanderEurycea bislineata

peak

Frogs and ToadsPickerel FrogLithobates palustris

peak

SnakesPine SnakePituophis melanoleucus

peak

SnakesRed-bellied SnakeStoreria occipitomaculata

peak

SnakesRing-necked SnakeDiadophis punctatus

peak

SnakesRough GreensnakeOpheodrys aestivus

peak

Frogs and ToadsSouthern Leopard FrogLithobates sphenocephalus

shoulder

Frogs and ToadsCarpenter FrogLithobates virgatipes

shoulder

LizardsCommon Five-lined SkinkPlestiodon fasciatus

shoulder

TurtlesCommon Snapping TurtleChelydra serpentina

shoulder

SnakesCommon WatersnakeNerodia sipedon

shoulder

TurtlesEastern Mud TurtleKinosternon subrubrum

shoulder

SalamandersEastern Red-backed SalamanderPlethodon cinereus

shoulder

Frogs and ToadsFowler's ToadAnaxyrus fowleri

shoulder

LizardsItalian Wall LizardPodarcis siculus

introduced

shoulder

TurtlesNorthern Red-bellied CooterPseudemys rubriventris

shoulder

TurtlesPainted TurtleChrysemys picta

shoulder

TurtlesPond SliderTrachemys scripta

introduced

shoulder

SalamandersRed SalamanderPseudotriton ruber

shoulder

Frogs and ToadsWood FrogLithobates sylvaticus

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.