Wildlife Clinic

Species

Mudsnake

Farancia abacura

A glossy black-and-red snake of southern swamps that feeds almost only on amphiumas and sirens.

A mudsnake coiled on the ground, glossy black with bright red bars running up its sides from its belly.

Photo John Sullivan (opens in a new tab) / Wikimedia Commons, CC BY-SA 3.0 (opens in a new tab)

At a glance

Size
Usually 100 to 140 cm long
Habitat
Swamps, marshes, slow streams and ponds
Diet
Amphiumas, sirens and other aquatic salamanders; frogs and fish
In Georgia
The Coastal Plain and lower Piedmont
Venomous
No
Rabies vector
No

Identification

Key marks
Glossy black above; red or pink belly with bars extending up the sides; tail ends in a sharp spine
Told apart from
Rainbow snake, which has red and yellow stripes along the back
Where to look
Rarely seen; sometimes crossing roads on rainy nights

Behaviour

Mudsnakes hunt amphiumas and sirens, large salamanders of the mud, gripping them with long teeth. The pointed tail tip is harmless; the snake presses it against a hand when grabbed.

Why they matter

They are the main predator of amphiumas and sirens, and part of the balance of southern swamps. Females coil around their eggs until they hatch.

Reproduction and lifecycle

Eggs — Often 20 to 50, sometimes more
Nest — In cavities in soil or logs, guarded by the female
Incubation — About 8 to 12 weeks
Hatchlings — About 20 cm long
Maturity — In a few years
Lifespan — Over 15 years

Living around people

  • It is harmless and almost never bites.

Misconceptions

  • Hoop snakes roll like wheels and sting with their tails. No snake rolls, and the tail spine is harmless.

Related species

Seasonal activity

When this species is breeding, and when there are nests on the ground. Mowing during the shaded months is how most nests are found.

Breeding and active nests by month for this species
JanFebMarAprMayJunJulAugSepOctNovDec
BreedingJan: noFeb: noMar: noApr: noMay: noJun: noJul: noAug: noSep: noOct: noNov: noDec: no
Active nestsJan: noFeb: noMar: noApr: noMay: noJun: noJul: noAug: noSep: noOct: noNov: noDec: no
NotesShelteringShelteringActive on warm daysActiveMatingLayingGuarding eggsHatchingYoung activeActiveShelteringSheltering

Where it lives

Recorded in 14 states and provinces. Each one links to the other animals there, and to the rehabilitators licensed for them.

If you found one

Answer a few questions and you will get a specific answer for what you are looking at.

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