Snake Bite First Aid: What to Do and What Not to Do (2026)
By Rachel Mercer, Paramedic and First Aid Educator • Published 6/2/2026
Snake Bite First Aid: What to Do and What Not to Do
A snake bite is a genuine medical emergency that requires immediate action — but the wrong response can be just as dangerous as the bite itself. Knowing the correct first aid procedure for snake bites, and understanding what actions to absolutely avoid, can mean the difference between recovery and a life-changing injury. In Australia, where some of the world's most venomous snakes are common, this knowledge is not optional — it is essential.
Table of Contents
- What Happens During a Snake Bite
- Step-by-Step: What to Do Immediately
- The Pressure-Immobilisation Technique
- What NOT to Do After a Snake Bite
- Signs and Symptoms of Envenomation
- First Aid Kit Essentials for Snake Bites
- Special Considerations: Children, Elderly, and Pets
- When to Call Triple Zero (000)
- Snake Bite Myths Debunked
- Frequently Asked Questions
- Sources & Further Reading
What Happens During a Snake Bite {#what-happens-during-a-snake-bite}
Snake bites occur when a snake injects venom into a person through its fangs. Not every snake bite results in envenomation — snakes can deliver "dry bites" where no venom is injected — but it is impossible to tell the difference in the field. This is why every snake bite must be treated as a medical emergency until proven otherwise by a doctor or hospital.
Australian snakes include some of the most deadliest species on the planet. The eastern brown snake (Pseudonaja textilis), responsible for the majority of snake bite deaths in Australia, accounts for more fatalities than any other snake worldwide. The taipan, tiger snake, death adder, and copperhead round out a roster of snakes whose venom can cause paralysis, internal bleeding, kidney failure, or destruction of muscle tissue — sometimes within minutes.
Venom works through two primary mechanisms. Neurotoxic venom attacks the nervous system and can cause muscle weakness, difficulty breathing, and eventual respiratory arrest. Haemotoxic venom attacks the blood-clotting system, causing uncontrolled bleeding and damage to organs. Some species deliver both types. The speed at which symptoms develop depends on the species, the amount of venom injected, the location of the bite (a bite to the face or a major blood vessel is faster acting), and the age and health of the person bitten.
Understanding what is happening physiologically is essential context for why certain first aid interventions — like immobilisation — are so critical. When someone is bitten, the venom travels through the lymphatic system rather than the bloodstream. This is the key to the pressure-immobilisation technique: by compressing the limb and keeping the person still, you slow the movement of venom through the lymph nodes and buy crucial time for medical help to arrive.
Step-by-Step: What to Do Immediately {#step-by-step-what-to-do-immediately}
The moment you or someone with you is bitten by a snake, every second matters. A calm, systematic response is what saves lives. Here is the exact sequence to follow, in order of priority.
1. Stop the Activity and Keep the Person Still
The person who has been bitten should stop moving immediately. Physical activity increases blood flow and lymph circulation, which accelerates the spread of venom. Help them sit or lie down in a safe position. If the person is alone and has been bitten, they should do their best to stay calm and avoid walking.
Keep the person as still as possible. Explain what you are doing in a calm voice — panic is contagious, and a panicked person will move more, increasing their heart rate and spreading venom faster.
2. Call Triple Zero (000) Immediately
This is not an exaggeration. In Australia, call 000 for an ambulance. If you are in a remote area and mobile coverage is limited, activate any available emergency beacon or communication device. Do not wait for symptoms to develop before calling. The ambulance dispatcher can guide you through first aid whilehelp is en route.
Do not attempt to drive the person to hospital yourself unless absolutely no emergency services are available — the risk of the person deteriorating en route without medical support is significant.
3. Apply a Pressure-Immobilisation Bandage
As soon as possible after the bite, apply a pressure-immobilisation bandage (see the full technique below). This is the single most effective first aid intervention for a snake bite in Australia and is recommended by Australian clinical guidelines.
4. Identify Any Witnesses and Note the Circumstances
While keeping the person still, note the time of the bite, the location, and what the snake looked like from a safe distance — but do not attempt to catch or kill it. If others witnessed the incident, have them call 000 while you manage the first aid. The more information medical responders have, the better.
5. Monitor and Reassure
Stay with the person. Monitor their breathing, consciousness, and any developing symptoms. Reassure them — the vast majority of people who receive proper first aid for snake bites in Australia survive, provided they get to hospital.
The Pressure-Immobilisation Technique {#the-pressure-immobilisation-technique}
The pressure-immobilisation technique (PI) was developed in Australia in the 1970s and is now the internationally recognised first aid method for elapid snake bites. It works by compressing the lymphatic vessels in a bitten limb, preventing venom from spreading from the bite site. Follow these steps precisely.
What You Need
- A stretchy bandage — 10-15 cm wide is ideal (an elastic or crepe bandage)
- A firm, flat surface for splinting (a rigid board,rolled-up newspaper, or any firm material)
- Strapping, tape, or additional bandages to secure the splint
Step 1: Apply the Bandage Over the Bite Site First
Start wrapping the bandage directly over the bite wound. Apply firm, even pressure — the bandage should be snug enough to indent the skin slightly but not so tight that it cuts off circulation entirely. You want to restrict lymphatic flow, not blood flow.
Step 2: Extend Upward
Continue wrapping the bandage upward from the bite site, overlapping the bandage by about half its width with each turn. Wrap the entire limb — from the fingers/toes all the way to the torso. If the bite is on the forearm, wrap all the way to above the elbow and secure firmly. If the bite is on the lower leg, wrap to above the knee.
Step 3: Immobilise the Limb
Once the bandage is in place, immobilise the limb using a splint. The splint should restrict all movement of the joint above and below the bite site. For a bite on the forearm, splint the elbow. For a bite on the lower leg, splint the knee. Use a rigid material secured with bandages or strapping.
Step 4: Keep the Person Completely Still
The person must not walk, stand, or move. If they are in a position where they cannot be carried to safety, keep them exactly where they are and wait for paramedics.
Important Notes on the Technique
- Do not remove the bandage until the patient is under hospital care with antivenom and medical staff ready to intervene. Removing it prematurely can cause a rapid surge of venom into the bloodstream.
- If the bite is on the torso, abdomen, head, or neck, apply firm direct pressure with your hands and keep the person completely still. These locations cannot be immobilised with a bandage in the same way.
- The bandage should remain on throughout the entire journey to hospital.
What NOT to Do After a Snake Bite {#what-not-to-do-after-a-snake-bite}
Equally important as knowing what to do is understanding the long list of things that seem logical but are actually dangerous. Many of the worst outcomes from snake bites in Australia come from well-meaning but harmful interventions.
❌ Do Not Cut or Suck the Wound
This is perhaps the most persistent myth. Cutting a snake bite does nothing to remove venom — venom is injected deep into tissue andayamatically enters the lymphatic system. Cutting causes additional tissue damage, increases bleeding risk, and can introduce infection. Sucking with your mouth is not only ineffective but exposes the rescuer to the venom and creates an infection risk.
❌ Do Not Apply a Tourniquet
A tourniquet cuts off blood flow entirely, which can cause the affected limb to lose blood supply entirely and lead to gangrene. Unlike some other venoms (such as from certain offshore marine creatures), Australian elapid snake venoms are better treated by the pressure-immobilisation technique, not total blood-flow restriction. Leave tourniquets in the kit.
❌ Do Not Wash the Bite Site
This is counter-intuitive but critically important. Traces of venom remaining on the skin around the bite can be collected by emergency department staff using a swab and analysed against known venom profiles in a Venom Detection Kit (VDK). This allows the correct antivenom to be administered without guessing. Washing the site destroys this valuable diagnostic information.
❌ Do Not Try to Catch or Kill the Snake
Never attempt to touch, capture, or kill a snake. Even a dying snake can deliver a venomous bite. If you want to help with identification — without any risk — note the snake's colour, pattern, head shape, and behaviour from a distance of at least several metres. A blurry photograph taken from a safe distance can help, but only if it does not delay first aid or put you at risk.
❌ Do Not Apply Ice or Elevate the Limb
Ice packs and elevation do not stop venom from spreading through the lymphatic system. Ice can cause cold injury to tissue already compromised by the bite. Keep the limb at approximately heart level — neutral positioning — and focus on compression and immobilisation.
❌ Do Not Give Alcohol or Painkillers
Alcohol thins the blood and can complicate the clinical picture. Do not give aspirin, ibuprofen, or any other painkiller unless specifically directed by a medical professional. Paracetamol may be considered in hospital, but field administration of any medication is not recommended.
Signs and Symptoms of Envenomation {#signs-and-symptoms-of-envenomation}
While you should never wait for symptoms before calling triple zero (000), knowing what to look for helps you communicate with emergency services and understand the severity of the situation.
Early Symptoms (within minutes to an hour)
- Pain, swelling, or bruising at the bite site
- Nausea, vomiting, or abdominal pain
- Sweating and fever
- Headache or dizziness
- Blurred vision or drooping eyelids
Signs of Neurotoxic Envenomation
- Difficulty speaking or swallowing
- Muscle weakness, especially in the face and neck
- Difficulty breathing — this is a medical emergency
- Ptosis — drooping eyelids (often the first noticeable sign of brown snake envenomation)
Signs of Haemotoxic Envenomation
- Uncontrolled bleeding from gums, nose, or old wounds
- Blood in urine or stools
- Severe bruising or spreading haematoma
- Signs of shock: pale, clammy skin, rapid pulse, confusion
If any of these symptoms develop — even hours after the bite — return to emergency care immediately. Envenomation can progress rapidly or can be delayed, depending on the species and the dose delivered. Everyone who receives a suspected envenomation requires at least 12 hours of observation in hospital.
First Aid Kit Essentials for Snake Bites {#first-aid-kit-essentials-for-snake-bites}
A well-stocked first aid kit is not complete without the specific items needed for a snake bite emergency in Australia. If you live in or travel to snake country, your kit should include the following.
Pressure-Immobilisation Bandage
An elastic or crepe bandage, minimum 10 cm wide, is the single most important item for snake bite management. Ideally carry two bandage rolls — one to bandage the limb, one to serve as a splint. Standard triangular bandages are not a substitute.
Rigid Splinting Material
A lightweight SAM splint, a foldable stiff board, or even a rolled magazine/newspaper can serve as an emergency splint. The splinting material should be rigid enough to prevent the limb from bending at a joint.
Emergency Communication Device
A fully charged mobile phone or, in remote areas, a personal locator beacon (PLB) is essential. In many bushwalking and rural scenarios, the nearest phone reception is kilometres from where a snake bite might occur.
Anti-Shock Thermal Blanket
A person in shock from envenomation loses body heat rapidly. A reflective thermal blanket is lightweight and can be life-saving in outdoor settings.
A comprehensive first aid kit with these items, combined with up-to-date first aid training, gives you the tools to manage a snake bite confidently. Consider completing a Provide First Aid (HLTAID011) course or a .remote area first aid course if you spend time in locations far from medical help.
Special Considerations: Children, Elderly, and Pets {#special-considerations-children-elderly-and-pets}
Children and Snake Bites
Children are at higher risk from snake bites because they are smaller and a given dose of venom affects a greater proportion of their body mass. Children may also be less able to communicate what happened or where they were bitten.
The same pressure-immobilisation technique applies, but use appropriately sized bandages and do not overtighten. Keep the child as calm as possible — crying and struggling increase heart rate and lymphatic circulation. If you are with a child who has been bitten, call 000 immediately and state the patient's age and weight when communicating with emergency services.
Do not attempt to restrain a panicking child by force if it means you cannot apply the bandage correctly. Prioritise the bandage application and call for help.
Elderly and Medically Vulnerable Individuals
Older adults, individuals on blood-thinning medications, or people with compromised immune systems are at greater risk of complications from both the envenomation and the stress of a medical emergency. The symptoms can be harder to interpret and the recovery time longer.
Follow the same first aid protocol without modification. The pressure-immobilisation technique is safe for elderly patients when applied with appropriate pressure (not so tight it compromises circulation).
Pets and Domestic Animals
Dogs are frequently bitten because of their curious nature, especially on the face, front legs, and torso. If your pet is bitten:
- Keep the animal as still as possible — carry them if you can
- Apply a pressure bandage to the limb if safe to do so (use a bandage or strip of cloth)
- Do not attempt to treat with human first aid products without veterinary guidance
- Contact a veterinarian immediately — your regular vet or an emergency animal hospital
Note the location and appearance of the snake if safe to do so, as this can help the vet identify the species and select the correct antivenom. [INTERNAL LINK: first aid kit for pets -> /first-aid-kit-essentials-what-every-home-needs]
When to Call Triple Zero (000) {#when-to-call-triple-zero-000}
In Australia, triple zero (000) is the number for life-threatening emergencies including snake bites. Here is a clear decision framework:
| Situation | Action |
|---|---|
| Confirmed or suspected snake bite, any symptoms | Call 000 immediately |
| Bite with fang marks visible | Call 000 immediately |
| Bite on face, neck, or torso | Call 000 immediately — cannot use pressure-immobilisation |
| Bite with no symptoms yet | Call 000 immediately — dry bites cannot be ruled out in the field |
| In remote area with no mobile signal | Activate PLB, signal for help |
| Person collapses, stops breathing | Start CPR and call 000 — call even if alone |
Do not wait to see if symptoms develop. By the time symptoms are obvious, significant envenomation has already occurred. The golden rule in Australian snake bite management is: call first, treat second.
Snake Bite Myths Debunked {#snake-bite-myths-debunked}
Myth 1: "You Should Suck the Venom Out"
False. There is no clinical evidence that suction devices or mouth suction removes snake venom. Venom is injected into tissue and muscle, not sitting in a visible wound pool. Cutting and suction causes harm to the victim and the rescuer without benefit.
Myth 2: "If It Doesn't Hurt, It Was a Dry Bite"
False. Pain is not a reliable indicator of envenomation. Some venomous bites cause minimal immediate pain, particularly brown snake bites, which are often described by victims as feeling like a "pin prick" or a scratch.
Myth 3: "You Can Identify a Venomous Snake by Its Colour"
False. Colour is an unreliable identifier even for experts. Many harmless snakes mimic the appearance of venomous species. Australian snakes in particular display enormous colour variation within species. Colour and pattern are not diagnostic — only a qualified herpetologist can identify with confidence.
Myth 4: "I Should Kill the Snake and Take It to Hospital"
False. A dead snake can still bite (reflex fangs), and spending time trying to kill or transport the snake delays essential first aid. Doctors no longer need to see the snake — they use Venom Detection Kits that work from a skin swab.
Myth 5: "A Tourniquet Will Stop the Venom Spreading"
False. Tourniquets cause more harm than good in Australian elapid envenomation. They cut blood flow entirely, risking limb loss and complications, while not effectively stopping lymphatic spread the way the pressure-immobilisation technique does.
Frequently Asked Questions {#frequently-asked-questions}
What should you do immediately after a snake bite?
Call triple zero (000) immediately, keep the person still and calm, and apply a pressure-immobilisation bandage. Do not wash the bite site, cut the wound, or try to suck out the venom. Note the time of the bite and the location.
What should you never do after a snake bite?
Never cut or suck the wound, never apply a tourniquet, never wash the bite site, and never try to catch or kill the snake. Removing clothing or jewelry near the bite site before swelling begins is appropriate, but active intervention like cutting or suction is dangerous.
How do you apply a pressure-immobilisation bandage?
Wrap a firm bandage (10-15cm wide) directly over the bite site first, then extend it upward to cover the entire limb. Immobilise the limb with a splint to prevent joint movement. Keep the person completely still and do not remove the bandage until hospital arrival.
Can you identify the snake species from the bite mark alone?
No. Fang marks can be hard to see and identification from appearance alone is unreliable. Medical teams use venom detection kits that work from skin swabs. Identifying features like colour and pattern are not diagnostic — and attempting to catch or examine the snake risks another bite.
How long does it take for snake venom to kill someone?
It depends on the species, the amount of venom injected, and the location of the bite. Some venoms cause life-threatening symptoms within 15 minutes. Others may take hours. Regardless of the timeline, call 000 immediately — do not wait to assess severity in the field.
Should you wash a snake bite wound?
No. Do not wash the bite site. Traces of venom on the skin can be collected by hospital staff using a swab and analysed with a venom detection kit to identify the snake species and administer the correct antivenom.
Does cutting or suctioning a snake bite help?
No. Cutting a snake bite and attempting to suck out venom with your mouth is ineffective, can cause additional tissue damage, infection, and exposes the rescuer to venom. There is no clinical evidence that any suction method removes significant quantities of venom.
What is the survival rate for snake bites in Australia with proper first aid?
The survival rate is very high when pressure-immobilisation is applied correctly and the person reaches hospital. Australia记录零死亡人数 from snake bites when proper first aid is administered and antivenom is given promptly. [INTERNAL LINK: first aid statistics Australia -> /australian-first-aid-statistics]
Sources & Further Reading
- Australian Red Cross. First Aid Fact Sheet: Snake Bite. https://www.redcross.org.au/get-help/emergencies/first-aid-facts/snake-bite/
- Australian Government — Department of Health. Snakebite Envenoming: Clinical information for health professionals. Therapeutic Goods Administration. https://www.tga.gov.au/snakebite-envenoming
- White, J. (2021). Australian Snakes: A Natural History and Field Guide. Reptiles and Amphibians of Australia. Published reference on Australian elapid venom profiles.
- Australian Resuscitation Council. Guidelines for First Aid and CPR in Australia. https://resus.org.au/guidelines/
- Journal of Toxicology — Clinical Toxicology. Weisman et al. (2018). "Pressure immobilisation in snakebite: the critical review." Clinical Toxicology, 56(7), 641-649.
Last updated: June 2026
Author: Rachel Mercer, Paramedic and First Aid Educator
Rachel Mercer is a practicing paramedic with 14 years of experience in emergency pre-hospital care across urban and remote Australia. She holds a Diploma of Paramedical Science and is a certified first aid instructor with the Australian Red Cross, specialising in envenomation first aid and wilderness medicine.