Ecoregion

Southern Coastal Plain Reptiles and Amphibians by Month

Flatwoods, springs and swamps cover the Southern Coastal Plain. Brown Anoles and American Alligators are the most-reported herps. Green Treefrogs and Southern Toads call on warm nights. Introduced Cuban Tree Frogs are spreading here. June is the busiest month, and the Florida Cottonmouth and Northern Cottonmouth live here.

85 species3 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 Southern Coastal Plain, by group and month

Group
Snakes	16	21	25	25	25	24	22	22	22	21	19	15
Lizards	16	18	22	22	20	21	21	22	21	20	20	16
Turtles	8	8	8	8	8	8	8	8	8	8	8	8
Frogs and Toads	16	17	20	19	19	19	19	18	18	18	18	18
Salamanders	7	6	7	7	4	3	3	2	5	4	5	7

Numbers = species active that month (at peak or just starting / winding down).

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75 species at peak or shoulder in September

peak

AlligatorsAmerican AlligatorAlligator mississippiensis

peak

Frogs and ToadsAmerican BullfrogLithobates catesbeianus

peak

SnakesBanded WatersnakeNerodia fasciata

peak

LizardsBark AnoleAnolis distichus

introduced

peak

LizardsBlack Spiny-tailed IguanaCtenosaura similis

introduced

peak

SnakesBrahminy BlindsnakeIndotyphlops braminus

introduced

peak

LizardsBrown AnoleAnolis sagrei

introduced

peak

LizardsBrown BasiliskBasiliscus vittatus

introduced

peak

Frogs and ToadsCane ToadRhinella marina

introduced

peak

SnakesCommon CoachwhipMasticophis flagellum

peak

SnakesCommon Garter SnakeThamnophis sirtalis

peak

SnakesCommon Ribbon SnakeThamnophis saurita

peak

TurtlesCommon Snapping TurtleChelydra serpentina

peak

Frogs and ToadsCope's Gray Tree FrogDryophytes chrysoscelis

peak

Frogs and ToadsCuban Tree FrogOsteopilus septentrionalis

introduced

peak

LizardsEastern Fence LizardSceloporus undulatus

peak

LizardsEastern Glass LizardOphisaurus ventralis

peak

SnakesEastern Hognose SnakeHeterodon platirhinos

peak

TurtlesEastern Musk TurtleSternotherus odoratus

peak

Frogs and ToadsEastern Narrow-mouthed ToadGastrophryne carolinensis

peak

SnakesEastern RatsnakePantherophis quadrivittatus

peak

Frogs and ToadsEastern SpadefootScaphiopus holbrookii

peak

SnakesFlorida CottonmouthAgkistrodon conanti

venomous

peak

LizardsFlorida Scrub LizardSceloporus woodi

peak

SnakesGlossy SwampsnakeLiodytes rigida

peak

LizardsGreen AnoleAnolis carolinensis

peak

Frogs and ToadsGreen FrogLithobates clamitans

peak

LizardsGreen IguanaIguana iguana

introduced

peak

Frogs and ToadsGreen TreefrogDryophytes cinereus

peak

Frogs and ToadsGreenhouse FrogEleutherodactylus planirostris

introduced

peak

Frogs and ToadsGulf Coast ToadIncilius nebulifer

introduced

peak

LizardsIndo-Pacific House GeckoHemidactylus garnotii

introduced

peak

LizardsKnight AnoleAnolis equestris

introduced

peak

LizardsLittle Brown SkinkScincella lateralis

peak

LizardsMediterranean House GeckoHemidactylus turcicus

introduced

peak

SnakesMudsnakeFarancia abacura

peak

SnakesNorth American RacerColuber constrictor

peak

SnakesNorthern CottonmouthAgkistrodon piscivorus

venomous

peak

LizardsNorthern Curly-tailed LizardLeiocephalus carinatus

introduced

peak

Frogs and ToadsOak ToadAnaxyrus quercicus

peak

LizardsPeters's Rock AgamaAgama picticauda

introduced

peak

Frogs and ToadsPig FrogLithobates grylio

peak

Frogs and ToadsPine Woods Tree FrogDryophytes femoralis

peak

SnakesPlain-bellied WatersnakeNerodia erythrogaster

peak

SnakesRed CornsnakePantherophis guttatus

peak

SnakesRed-bellied SnakeStoreria occipitomaculata

peak

SnakesRing-necked SnakeDiadophis punctatus

peak

SnakesRough GreensnakeOpheodrys aestivus

peak

SnakesScarlet KingsnakeLampropeltis elapsoides

peak

LizardsSix-lined RacerunnerAspidoscelis sexlineatus

peak

LizardsSoutheastern Five-lined SkinkPlestiodon inexpectatus

peak

Frogs and ToadsSouthern Cricket FrogAcris gryllus

peak

Frogs and ToadsSouthern Leopard FrogLithobates sphenocephalus

peak

Frogs and ToadsSouthern ToadAnaxyrus terrestris

peak

SalamandersSouthern Two-lined SalamanderEurycea cirrigera

peak

Frogs and ToadsSquirrel Tree FrogDryophytes squirellus

peak

TurtlesStriped Mud TurtleKinosternon baurii

peak

SalamandersThree-lined SalamanderEurycea guttolineata

peak

SnakesTimber RattlesnakeCrotalus horridus

venomous

peak

LizardsTropical House GeckoHemidactylus mabouia

introduced

peak

LizardsVeiled ChameleonChamaeleo calyptratus

introduced

shoulder

Frogs and ToadsBarking Tree FrogDryophytes gratiosus

shoulder

LizardsBroad-headed SkinkPlestiodon laticeps

shoulder

SnakesBrown WatersnakeNerodia taxispilota

shoulder

SnakesCentral RatsnakePantherophis alleghaniensis

shoulder

TurtlesCoastal Plain CooterPseudemys floridana

shoulder

SalamandersCoastal Plain Dwarf SalamanderEurycea quadridigitata

shoulder

LizardsCommon Five-lined SkinkPlestiodon fasciatus

shoulder

TurtlesEastern Mud TurtleKinosternon subrubrum

shoulder

SalamandersEastern NewtNotophthalmus viridescens

shoulder

TurtlesPeninsular CooterPseudemys peninsularis

shoulder

TurtlesPond SliderTrachemys scripta

shoulder

TurtlesRiver CooterPseudemys concinna

shoulder

SnakesScarletsnakeCemophora coccinea

shoulder

SalamandersTwo-toed AmphiumaAmphiuma means

About Southern Coastal Plain

When are reptiles and amphibians most active in the Southern Coastal Plain?

June is the busiest month in the Southern Coastal Plain, with 72 species at peak activity. At least half of the area's species are active all year.

What reptiles and amphibians live in the Southern Coastal Plain?

85 species have enough iNaturalist records to show here: 25 snakes, 23 lizards, 20 frogs and toads, 8 turtles, 8 salamanders, and 1 alligator. The most-reported are the Brown Anole, American Alligator, and Green Anole.

Are there venomous snakes in the Southern Coastal Plain?

Yes. The Florida Cottonmouth, Northern Cottonmouth, and Timber Rattlesnake live here. Don't handle them.

Which reptiles and amphibians in the Southern Coastal Plain are introduced?

The Brown Anole, Cuban Tree Frog, Tropical House Gecko, and Peters's Rock Agama 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.