Cape Tiger Snake
Notechis scutatus
A regional form of tiger snake found on offshore islands and coastal areas, often smaller-bodied than mainland populations.
- Venomous?
- Venomous
- Adult length
- 1-1.5 m (3.3-5 ft)
- Range
- Southern and western Australia (coastal and island populations)
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Overview
The Cape tiger snake refers to island and coastal populations of the tiger snake complex found along parts of southern and western Australia, where isolated populations have developed distinctive size and color characteristics compared to mainland tiger snakes.
These populations retain the same potent venom and defensive behavior typical of tiger snakes, but often show reduced or altered adult body size linked to prey availability on islands.
How to identify it
- Dark olive, grey, or blackish body, sometimes with faint banding
- Body size and build vary by population compared to mainland tiger snakes
- Broad head with round pupils
- Heavy body relative to length
- Flattens neck defensively when threatened
- Distinguished from mainland tiger snakes mainly by size and darker coloration of island forms
Habitat & range
Occurs in coastal scrub, offshore islands, and rocky shoreline habitats of southern and western Australia, often near seabird colonies that provide seasonal prey.
Behavior, diet & reproduction
Active during the day, feeding heavily on seabird chicks and eggs in island populations. Defensive displays include neck-flattening and hissing. Ovoviviparous, producing live young.
Frequently asked questions
Is the Cape tiger snake dangerous?
Yes, it carries potent venom typical of the tiger snake group and is medically significant.
Why do island tiger snake populations differ in size?
Limited and seasonal prey availability on islands has led to altered adult body size in some populations.
What do they eat?
Seabird chicks and eggs feature heavily in island populations' diets.
Where are they found?
Along coastal and island regions of southern and western Australia.
Cape Tiger Snake guides
In-depth guides for identifying and understanding Cape Tiger Snake.
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