Missouri
Snakes in Butler County
13 species have been documented here, 2 of them venomous.
Venomous snakes in Butler County
Full guide & what to do if bitten →
Northern CottonmouthAgkistrodon piscivorusVenomousHeavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.
Eastern CopperheadAgkistrodon contortrixVenomousHeavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.
Every snake recorded in Butler County

Western Ratsnake
Pantherophis obsoletus
Harmless

Plain-bellied Watersnake
Nerodia erythrogaster
Harmless

Northern Cottonmouth
Agkistrodon piscivorus
Venomous

Eastern Copperhead
Agkistrodon contortrix
Venomous

Rough Greensnake
Opheodrys aestivus
Harmless

Common Watersnake
Nerodia sipedon
Harmless

DeKay's Brownsnake
Storeria dekayi
Harmless

Diamondback Watersnake
Nerodia rhombifer
Harmless

Speckled Kingsnake
Lampropeltis holbrooki
Harmless

Mudsnake
Farancia abacura
Harmless

North American Racer
Coluber constrictor
Harmless

Ring-necked Snake
Diadophis punctatus
Harmless

Eastern Hognose Snake
Heterodon platirhinos
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Butler County: FAQ
- Are there venomous snakes in Butler County, Missouri?
- Yes. 2 venomous snake species have verified records in Butler County, Missouri, including Northern Cottonmouth, Eastern Copperhead. Most snakes in Butler County, Missouri, however, are harmless.
- How many snake species live in Butler County, Missouri?
- 10+ snake species have verified records in Butler County, Missouri, of which 2 are venomous.
- What is the most commonly seen snake in Butler County, Missouri?
- The Western Ratsnake is the most frequently reported snake in Butler County, Missouri, based on verified wildlife observations.
- What should I do if I see a venomous snake in Butler County, Missouri?
- Keep your distance and do not try to catch or kill it. Most bites happen when people handle or corner a snake. If someone is bitten, contact local emergency services or poison control immediately.