Western Brown Snake

Western Brown Snake

Pseudonaja mengdeni

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered Endemic
Daily sighting probability Insufficient data
at Cape Range
2 Verified sightings at Cape Range From 2019 to 2026
13 Verified sightings across all 3 parks From 2019 to 2026
☀️🌙 Day & Night When it's spotted Active throughout day and night

About the Western Brown Snake

The western brown snake (Pseudonaja mengdeni) is commonly known as Mengden's brown snake, and alternatively, gwardar. Pseudonaja mengdeni is endemic to Australia. It is highly variable in colour and patterns and is a highly dangerous elapid whose bite can cause severe symptoms resulting in death. It is one of the three species originally classified as Pseudonaja nuchalis along with P. aspidorhyncha, and P. nuchalis.

Previously the western brown snake was considered a 'morph' form of Pseudonaja nuchalis, recent genetic studies have proven it to be genetically unique. It is estimated that Pseudonaja nuchalis could include in excess of 10 different species. Although currently there have been 8 species chromosomeally identified species these include: P. aspidorhyncha, P. mengdeni, P. imperator, P. acutirostris, P. gowi, P. carinata, P. kellyi and P. nuchalis.

Pseudonaja mengdeni grows up to a total length of 2m with an average length 1.2m. It has slender body and narrow head. Mengden's brown snake is highly variable in colour and patterns, ranging from light brown to almost black. However it has two distinct forms 'Orange with black head' or 'Pale head... Wikipedia →

Global Distribution

Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.

where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is)  ·  parks where it occurs — tap a pin for the sighting probability there

Parks Where Found

# Park Country Daily sighting probability
1 Uluru-Kata Tjuta National Park 🇦🇺 Australia
~20%
2 Cape Range 🇦🇺 Australia
Insufficient data
3 Ningaloo Marine Park 🇦🇺 Australia
Insufficient data
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