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Snakes

Western Ratsnake

Pantherophis obsoletus

Across the regions where it's common, the Western Ratsnake peaks from April to July.

Shows up in 9 ecoregions and 7 states

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Snakes

Western Ratsnake

Pantherophis obsoletus

Look, don't take. Many states regulate collecting reptiles and amphibians. Photograph it, log it on iNaturalist and leave it where you found it.

Description

Pantherophis obsoletus, also known commonly as the western rat snake, black rat snake (not to be confused with Pantherophis alleghaniensis), pilot black snake, or simply black snake, is a nonvenomous species of snake in the family Colubridae. Western rat snakes typically range 106.7 ‒183 cm.Wikipedia ↗

Habitat

Pantherophis obsoletus is found west of the Mississippi River, from eastern and southern Iowa southward through Missouri and Arkansas to western Louisiana, westward to eastern Texas, northward through Oklahoma and eastern Kansas to southeastern Nebraska. Rat snakes of the genus Pantherophis are primarily diurnally active and live in a variety of habitats; some overlap each other.Wikipedia ↗

When it's active

In Pantherophis obsoletus, mating takes place in late May and early June. The mating lasts a few minutes to a few hours.Wikipedia ↗
Stephanie Dolrenry · CC BY-SA 4.0

Often mistaken for

Eastern Copperhead, Broad-banded CopperheadThough superficially resembling the venomous copperhead (Agkistrodon contortrix) and often killed as a result of this mistaken identity, the corn snake lacks functional venom and is harmless to humans. Wikipedia ↗Corn snakes can sometimes be confused with venomous southern copperheads (Agkistrodon contortrix), but the two can be differentiated by the narrower head, lighter coloration, and square-shaped spots that are found in red corn snakes. Animal Diversity Web ↗Copperheads vs. young ratsnakes, corn snakes, watersnakes and hognose snakes →

When and where it's active

Each row is its own calendar, counted from records in that area. Seasons shift by place.

PeakShoulderQuiet

Ecoregions

States

JanFebMarAprMayJunJulAugSepOctNovDec
ArkansasKansasLouisianaMissouriNebraskaOklahomaTexas

About the Western Ratsnake

When is the Western Ratsnake most active?

Across the regions where it's common, the Western Ratsnake peaks from April to July.

Where does the Western Ratsnake live?

It has enough records to show in 9 ecoregions and 7 states, including Arkansas, Kansas, Louisiana, and Missouri.

What does the Western Ratsnake look like?

It's often confused with the Eastern Copperhead and Broad-banded Copperhead.