Snake Identifier
Aesculapian Snake (Zamenis longissimus)
2019-05-19 (366) Bicycle tour Emmersdorf - Pöchlarn - Melk - Emmersdorf, Austria by GT1976, via Wikimedia Commons, licensed under CC BY-SA 4.0
Colubrids

Aesculapian Snake

Zamenis longissimus

A large, agile European colubrid historically linked to the symbol of medicine, favoring warm woodlands and old buildings.

Venomous?
Non-venomous
Adult length
1.0-1.8 m (3.3-6 ft)
Range
Europe

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Overview

The Aesculapian Snake is a large, slender colubrid native to much of central and southern Europe, historically significant as the species believed to have inspired the Rod of Asclepius, a symbol of medicine still used today. It is entirely harmless to humans, though it can grow quite large and is an excellent climber.

It favors warm, sheltered environments and has been introduced to a handful of locations outside its native range through historical association with human settlements.

How to identify it

  • Slender, elongated body with smooth, glossy scales
  • Uniform brown, olive, or yellowish-brown coloration in adults, sometimes with faint white flecking
  • Juveniles show more contrasting pattern with dark blotches, fading with age
  • Round pupils
  • Adults can reach up to 1.8 meters, among the larger European colubrids

Its large size, smooth glossy scales, and largely uniform brown adult coloration distinguish it from other European snakes.

Habitat & range

Found in warm, sunny woodlands, forest edges, vineyards, rocky slopes, and old stone structures across central and southern Europe, from France and Germany through Italy and the Balkans. Historically linked to human settlements and ruins, likely aided by past introductions.

Behavior, diet & reproduction

Diurnal and an excellent climber, often found in trees, shrubs, or old walls. Feeds on rodents and other small mammals, as well as birds and eggs, subduing prey by constriction. Generally calm in temperament. Reproduction is egg-laying (oviparous), with clutches typically of 5-10 eggs laid in warm, decaying organic matter.

Frequently asked questions

Is the Aesculapian Snake venomous?

No, the Aesculapian Snake is non-venomous and harmless to humans.

Why is the Aesculapian Snake historically significant?

It is believed to be the species that inspired the Rod of Asclepius, a widely used symbol of medicine.

How big does the Aesculapian Snake get?

It is one of the larger European colubrids, with adults reaching up to 1.8 meters.

Where is the Aesculapian Snake found?

It occurs across central and southern Europe, favoring warm woodlands and old stone structures.