483 reptiles and amphibians · 53 ecoregions · 50 states

See which reptiles and amphibians are out near you.

A free calendar built from millions of iNaturalist sightings. Pick your area to see what's active this month, and how to tell venomous snakes from their harmless look-alikes.

Find my area

Species out across the US, by group and month

Group
Snakes	56	93	116	134	136	137	131	129	128	125	98	67
Lizards	57	80	111	118	117	117	113	112	109	99	78	58
Turtles	19	23	28	31	30	28	28	28	29	30	26	17
Frogs and Toads	41	57	63	71	71	72	71	71	71	65	45	40
Salamanders	77	87	103	106	89	74	61	61	76	96	92	77

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

Keep Herp Calendar free

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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Pick your area

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Tap a region to see what's out

At peak in September

The most-seen species at their peak across the US. Pick your area for your local list.

peak

LizardsWestern Fence LizardSceloporus occidentalis

peak

Frogs and ToadsAmerican ToadAnaxyrus americanus

peak

LizardsGreen AnoleAnolis carolinensis

peak

SnakesCommon Garter SnakeThamnophis sirtalis

peak

LizardsBrown AnoleAnolis sagrei

introduced

peak

Frogs and ToadsAmerican BullfrogLithobates catesbeianus

peak

Frogs and ToadsGreen FrogLithobates clamitans

peak

LizardsCommon Side-blotched LizardUta stansburiana

Know the venomous ones

Harmless snakes get killed all the time because they look like these. Learn the difference.

Coral snakes vs. kingsnakes, milksnakes and scarlet snakesHow to tell them apart →Copperheads vs. young ratsnakes, corn snakes, watersnakes and hognose snakesHow to tell them apart →Cottonmouths vs. watersnakesHow to tell them apart →Rattlesnakes vs. gopher snakes, bullsnakes and hognose snakesHow to tell them apart →

How it works

Pick your place

Tap your ecoregion or state. We split the country into 53 ecoregions so the seasons match your ground.

See what's out

A 12-month calendar shows which species are at peak, just starting or winding down, and which are tucked away for the year.

Look, don't take

Venomous species are flagged with their harmless look-alikes. Rare and protected species are left off on purpose.

Built from real sightings

Herp Calendar's seasons come from 3.7 million research-grade reptile and amphibian records on iNaturalist, downloaded through GBIF and mapped onto US Level III ecoregions and state lines. Each month is corrected for how many people are out looking, so a busy weekend doesn't fake a season.

Species descriptions are word-for-word quotes from Wikipedia and Animal Diversity Web, with a link to each source. See every species and how the data is built.

Rare and protected species are left off on purpose, so this site can't be used to find them. Leave what you find where you found it, and never handle a venomous snake.