Snake profile

Death Adder (Acanthophis antarcticus)

Acanthophis antarcticus

Database risk label: CRITICAL
Location: Eastern & Northern Australia
Database size: 40-100cm

WildGuardian encounter-risk label: CRITICAL. This page concerns the Australian snake Acanthophis antarcticus, called the Common Death Adder by the Australian Museum. It is a member of the Elapidae family, and the Museum notes that several species of death adders occur in Australia. [1]

This is a safety-first guide for observing the animal from a distance. It is not a field-identification service, medical diagnosis or advice to handle, capture or relocate a snake.

Identification limits: recognise the risk, not a snake with certainty

The Australian Museum describes the Common Death Adder as having a triangular-shaped head, a short, stout body and a thin tail. It gives a reported size range of 40–100 cm. [1] The University of Melbourne’s Australian Venom Research Unit describes A. antarcticus as typically 400–700 mm long, occasionally reaching 1 m, and records a stout body, angular head and a tail that is distinct from the body. [2]

Those details can help explain why the species looks different from a long, slender snake, but they are not a safe basis for confirmation in the field. The specialist description also includes scale features that require close examination; a person should never approach a snake to check them. [2] Healthdirect warns that snakes can be difficult to identify and says all snake bites should be treated as medical emergencies. [3]

For that reason, do not use colour, body shape, a photograph, a presumed range or an online comparison to decide that an animal is harmless. Keep your distance, do not touch it, and make the response to a possible bite the same regardless of the species name.

Australian range and habitat

Australian distribution is best understood as broad context rather than a promise that this snake occurs at a particular site. The Australian Museum lists Common Death Adders in the Northern Territory, Queensland, New South Wales, Victoria, South Australia and Western Australia. [1] The University of Melbourne’s species entry gives a more specific distribution of the ACT; eastern New South Wales; southern and eastern Queensland; the southern coasts of South Australia and Western Australia; and isolated or relict populations in south-western Western Australia and central New South Wales. [2]

There is important uncertainty at the margins of that range. A Victorian threatened-species assessment says the last probable Victorian record was in 1861 and that the species is likely no longer present there, while allowing that it may occur in far East Gippsland. [5] These source differences are a good reason not to treat a broad map or a social-media sighting as local confirmation. For a location-specific question, use the relevant state or territory wildlife authority rather than this profile.

The Australian Museum lists forests and woodlands, grasslands and heath as habitat. [1] The Australian Venom Research Unit describes the species’ habitat across its range as extending from rainforest to scrubland and heathland. [2] In the Victorian assessment, the habitat description is narrower: dry forest and heath with dense litter and ground vegetation. [5] Together, these descriptions show why leaf litter, ground cover and varied vegetation deserve care when people are walking or working outdoors; they do not identify a particular snake present at a site.

Behaviour and activity

The Common Death Adder is an ambush hunter rather than a snake that actively searches for prey. The Australian Museum describes it as lying coiled and inconspicuous under leaves, twitching a yellowish, grub-like tail near its head as a lure; it records frogs, lizards and birds in its diet. [1] The Australian Venom Research Unit similarly describes A. antarcticus as a secretive, sit-and-wait ambusher that uses tail luring, and says it is typically nocturnal. [2]

That behaviour has two practical implications for people. First, a motionless animal can be easy to overlook in natural ground cover. Second, do not assume a snake will move away merely because it has been noticed. The safest encounter is one in which people create space and let the animal remain undisturbed or move away without pressure.

Safer encounters with a suspected death adder

Seeing a snake is not a reason to test an identification or to get closer. Use simple, low-risk actions instead:

Stop and move back to a safe distance. Healthdirect advises people not to panic, to back away and allow the snake to move away on its own. [3]
Keep children, other people and pets away. Do not touch, handle, corner, prod, capture or try to kill the snake. Healthdirect and ANZCOR both advise against trying to catch or kill it. [3] [4]
Do not block the animal’s path or approach for a closer photograph. Distance is more useful than identification certainty in preventing contact.
Use a torch outdoors at night and watch where hands and feet are placed. These are general snake-avoidance measures recommended by Healthdirect. [3]

If you cannot maintain a safe separation, leave the immediate area where possible. This page does not provide handling, capture or relocation directions.

Possible bite or medical response

A suspected snake bite is an emergency, even when the bite seems minor, painless or hard to see. ANZCOR notes that a bite may be painless and may have no visible marks. [4] Call 000 for an ambulance immediately and follow the instructions you receive; do not wait for the snake to be identified or for symptoms to develop. [3] [4]

While waiting for professional help, ANZCOR recommends keeping the person still, reassured and under constant observation. [4] If the person is unresponsive and not breathing normally, follow emergency-dispatcher directions and the applicable official CPR guidance. [4] Do not try to catch or kill the snake for identification. Do not experiment with the bite or attempt improvised treatments: ANZCOR specifically says not to cut, incise, wash or suck the bite, and not to use an arterial tourniquet. [4]

Hospital clinicians decide whether antivenom is needed. Healthdirect states that the decision is made by a doctor, with clinical toxicology input where needed; it is not a decision to make at the scene. [3]

What the CRITICAL label means here

CRITICAL is WildGuardian’s encounter-risk label for this record. It signals that a possible bite warrants an urgent emergency response, not that this page is assigning a national conservation category or describing local legal requirements. The Victorian assessment is jurisdiction-specific and records its own status history and uncertainty; it should not be read as a current Australia-wide conservation finding. [5]

Frequently asked questions

Is a death adder the same animal as Acanthophis antarcticus?

On this page, “Death Adder” refers specifically to Acanthophis antarcticus, which the Australian Museum calls the Common Death Adder. The Museum also notes that Australia has several death-adder species, so a general common name alone is not a reliable species identification. [1]

Can I identify a Common Death Adder by its triangular head and stout body?

Those are features reported for the species, but they are not an invitation to approach or a safe way to confirm a snake in the field. [1] [2] Treat an unfamiliar snake cautiously, keep distance and do not wait for visual confirmation if a bite may have occurred. [3]

Where might Acanthophis antarcticus occur in Australia?

Authoritative sources place it across parts of southern, eastern and south-western Australia, but they differ on some outer areas and the Victorian record is particularly uncertain. [1] [2] [5] Use the broad range only as context, not as proof that a snake is or is not present in a particular reserve, garden or suburb.

Are Common Death Adders active at night?

The Australian Venom Research Unit describes A. antarcticus as typically nocturnal and as a secretive ambush hunter. [2] That does not make daytime encounters safe to dismiss: Healthdirect says snakes can be encountered during the day and at night. [3]

What should I do if a snake might have bitten someone?

Call 000 for an ambulance straight away, follow official directions and do not wait to identify the snake. Keep the person still and reassured while help is arranged, and do not attempt to catch or kill the animal. [3] [4]

References

Last reviewed: 21 October 2026. This is general information, not a substitute for medical care.