Month by month

What Reptiles and Amphibians Are Out in Missouri in August

46 reptiles and amphibians are active in Missouri in August, and 21 are at peak. Peak species include the Three-toed Box Turtle, American Toad, Prairie Lizard, and Common Watersnake.

Counted from iNaturalist research-grade observations recorded inside Missouri. Seasons shift across the state, so for a closer match, pick your ecoregion.

Full 12-month Missouri calendar Pick your ecoregion

Species out across Missouri, by group and month

Group
Snakes	1	5	22	23	24	20	17	19	21	20	14	3
Lizards		3	4	6	6	6	6	5	3	3	2
Turtles	1	3	5	8	10	10	9	9	8	6	4	1
Frogs and Toads	2	7	10	10	9	10	11	9	10	10	6	2
Salamanders	1	7	9	9	6	4	4	4	5	6	4

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

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At peak in August 21

Snakes

peak

SnakesCommon WatersnakeNerodia sipedon

peak

SnakesEastern CopperheadAgkistrodon contortrix

venomous

peak

SnakesPrairie KingsnakeLampropeltis calligaster

peak

SnakesPygmy RattlesnakeSistrurus miliarius

venomous

peak

SnakesRed-bellied SnakeStoreria occipitomaculata

peak

SnakesTimber RattlesnakeCrotalus horridus

venomous

Lizards

peak

LizardsCommon Five-lined SkinkPlestiodon fasciatus

peak

LizardsPrairie LizardSceloporus consobrinus

Turtles

peak

TurtlesEastern Musk TurtleSternotherus odoratus

peak

TurtlesNorthern Map TurtleGraptemys geographica

peak

TurtlesRiver CooterPseudemys concinna

peak

TurtlesSpiny SoftshellApalone spinifera

peak

TurtlesThree-toed Box TurtleTerrapene triunguis

Frogs and Toads

peak

Frogs and ToadsAmerican BullfrogLithobates catesbeianus

peak

Frogs and ToadsAmerican ToadAnaxyrus americanus

peak

Frogs and ToadsFowler's ToadAnaxyrus fowleri

peak

Frogs and ToadsGreen FrogLithobates clamitans

peak

Frogs and ToadsPickerel FrogLithobates palustris

peak

Frogs and ToadsPlains Leopard FrogLithobates blairi

peak

Frogs and ToadsSouthern Leopard FrogLithobates sphenocephalus

Salamanders

peak

SalamandersDark-sided SalamanderEurycea melanopleura

Shoulder season in August 25

Snakes

shoulder

SnakesCommon Garter SnakeThamnophis sirtalis

shoulder

SnakesDeKay's BrownsnakeStoreria dekayi

shoulder

SnakesDiamondback WatersnakeNerodia rhombifer

shoulder

SnakesEastern Hognose SnakeHeterodon platirhinos

shoulder

SnakesLined SnakeTropidoclonion lineatum

shoulder

SnakesNorth American RacerColuber constrictor

shoulder

SnakesNorthern CottonmouthAgkistrodon piscivorus

venomous

shoulder

SnakesPlain-bellied WatersnakeNerodia erythrogaster

shoulder

SnakesRing-necked SnakeDiadophis punctatus

shoulder

SnakesRough GreensnakeOpheodrys aestivus

shoulder

SnakesSpeckled KingsnakeLampropeltis holbrooki

shoulder

SnakesWestern RatsnakePantherophis obsoletus

shoulder

SnakesWestern Ribbon SnakeThamnophis proximus

Lizards

shoulder

LizardsBroad-headed SkinkPlestiodon laticeps

shoulder

LizardsLittle Brown SkinkScincella lateralis

shoulder

LizardsSix-lined RacerunnerAspidoscelis sexlineatus

Turtles

shoulder

TurtlesCommon Snapping TurtleChelydra serpentina

shoulder

TurtlesOrnate Box TurtleTerrapene ornata

shoulder

TurtlesPainted TurtleChrysemys picta

shoulder

TurtlesPond SliderTrachemys scripta

Frogs and Toads

shoulder

Frogs and ToadsBlanchard's Cricket FrogAcris blanchardi

shoulder

Frogs and ToadsGray TreefrogDryophytes versicolor

Salamanders

shoulder

SalamandersCave SalamanderEurycea lucifuga

shoulder

SalamandersEastern NewtNotophthalmus viridescens

shoulder

SalamandersWestern Slimy SalamanderPlethodon albagula

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.

Missouri in August

What reptiles and amphibians are out in Missouri in August?

46 reptiles and amphibians are active in Missouri in August, and 21 are at peak. Peak species include the Three-toed Box Turtle, American Toad, Prairie Lizard, and Common Watersnake.

Are venomous snakes active in Missouri in August?

Yes. The Eastern Copperhead, Northern Cottonmouth, Timber Rattlesnake, and Pygmy Rattlesnake can be active in August. Watch where you step and don't handle them.