Snake Identifier
Western Brown Snake (Pseudonaja nuchalis)
Pseudonaja nuchalis (39958329932) by Donald Hobern from Copenhagen, Denmark, via Wikimedia Commons, licensed under CC BY 2.0
Cobras & elapids

Western Brown Snake

Pseudonaja nuchalis

A highly variable and widely distributed Australian elapid, found across arid and semi-arid regions of the continent.

Adult length
1.2-1.8 m (4-6 ft)
Range
Western, central, and northern Australia

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Overview

The Western Brown Snake, also known as the gwardar, is one of the most geographically widespread and variably patterned snakes in Australia, occurring across much of the arid interior and northern regions.

It belongs to the genus Pseudonaja, the brown snakes, which are fast-moving and alert.

How to identify it

  • Highly variable coloration: shades of brown, gray, orange, or reddish, sometimes with banding, especially in juveniles
  • Some populations show distinct dark bands or a barred pattern
  • Smooth scales, slender to moderately built body
  • Round pupils, relatively large eyes
  • Head barely distinct from neck; juveniles often show a dark head cap that fades with age

Habitat & range

Occupies arid and semi-arid habitats including deserts, spinifex grassland, woodland, and rocky outcrops across western, central, and northern Australia.

Behavior, diet & reproduction

Diurnal and fast-moving, often active in the heat of the day. Alert and quick to flee, but raises its forebody in an S-shaped threat posture if cornered. Feeds on lizards, small mammals, and other snakes. Reproduces by egg-laying.

Frequently asked questions

How variable is its appearance?

Extremely variable, ranging from plain brown to banded or reddish patterns depending on locality and age.

Where is it found?

Across arid and semi-arid regions of western, central, and northern Australia.

What does it eat?

Lizards, small mammals, and occasionally other snakes.

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Western Brown Snake