Found a snake in Siem Reap? Here's what you actually need to know — and what to do if you're bitten
A photo, snapped hastily from the doorway, posted minutes later in a local Facebook group: “Does anyone know what this is? It's in my garden, I don't know what to do.” In Siem Reap, as elsewhere in Cambodia, this scene repeats itself almost daily during the rainy season. Between panic, curiosity, and conflicting advice in the comments, it's not always easy to separate fact from fiction. Here's what health authorities, herpetologists, and Cambodian hospitals actually say — on identification, what to do when you encounter a snake, and above all, the steps that save a life after a bite.
Why so many snakes turn up in gardens
The phenomenon is far from anecdotal. Urbanization and the expansion of residential areas around Siem Reap and other Cambodian cities encroach directly on snakes' natural habitat, while human activity itself — waste, attics, chicken coops — attracts the rodents and small reptiles that many species feed on. According to Mark Dainty, animal curator at the Angkor Wildlife and Aquarium in Siem Reap, quoted by Cambodianess, it's precisely these food sources generated by human habitation that explain the growing presence of snakes near homes — a phenomenon amplified during the rainy season, when rising water drives snakes out of their burrows and low-lying areas toward drier, often inhabited, ground.
In other words: the surge of snake photos on social media in Siem Reap doesn't necessarily reflect a population explosion, but rather an increasingly close overlap between urbanized areas and natural habitat.
What species might you actually encounter?
Good news first: the vast majority of snakes encountered around homes in Cambodia are harmless. Rat snakes, various colubrids, and the very common painted bronzeback (Dendrelaphis pictus) — recognizable by the bright blue throat it inflates to intimidate predators — pose no danger to humans.
That said, Cambodia is home to at least 17 venomous snake species, according to a reference report on snakebite management in the country. They fall into two major families with very different venoms: Elapidae (cobras, kraits), whose venom is primarily neurotoxic, and Viperidae (vipers, including Asian pit vipers), whose venom mainly affects blood clotting and tissue. Among the most dangerously encountered species: the Malayan pit viper (Calloselasma rhodostoma), the white-lipped pit viper (Cryptelytrops albolabris), the Indochinese Russell's viper (Daboia siamensis), the monocled cobra (Naja kaouthia), the Indochinese spitting cobra (Naja siamensis), and the Malayan blue krait (Bungarus candidus).
These species can be distinguished by morphology — the hood of cobras, the triangular head of vipers — but caution is warranted: several clinical studies note that these features aren't always reliable for certain field identification, particularly at night or from a distance.
What to do if you find a snake at home
The golden rule, echoed by every wildlife protection organization: never try to catch, kill, or handle a snake yourself, whether it's identified as venomous or not. Most bites happen precisely when someone tries to grab, push away, or kill the animal.
In practice: keep children and pets away from the area, maintain a safe distance, and if possible, let the snake leave on its own — most don't seek confrontation and will move away quickly if they don't feel threatened. If the snake becomes trapped in an enclosed space (a room, a walled courtyard), close off access to the rest of the home and contact professionals rather than intervening yourself.
For identification, specialized community groups like “Snakes of Cambodia” on Facebook bring together enthusiasts and local experts who can identify a species from a photo taken at a safe distance — a valuable tool for settling doubt, but one that should never replace medical advice after a bite, nor serve as grounds for deciding to approach or handle the animal. For reports related to the illegal wildlife trade, the NGO Wildlife Alliance operates a dedicated line (012 500 094) — a channel built primarily to combat trafficking in protected species, but one that can, depending on the case, help direct you to the right contacts.
If you're bitten: the steps that save lives, and the ones that cost them
This is where misinformation does the most damage. According to Cambodian health authorities and World Health Organization recommendations, widely echoed by major public health bodies (the US CDC, the Mayo Clinic), certain traditional or instinctive reflexes seriously worsen a victim's prognosis — sometimes costing them a limb, or their life.
Never do this: apply a tourniquet (it only concentrates the venom and can cause gangrene), cut the wound, try to suck out the venom, apply ice, give alcohol or anti-inflammatories (aspirin, ibuprofen) which increase bleeding risk, or waste time searching for, catching, or killing the snake responsible.
Do this immediately: stay calm and limit movement — a faster heart rate speeds the venom's spread through the body; remove rings, bracelets, and tight clothing before the area swells; immobilize the affected limb in a neutral, comfortable position, without raising it above heart level; simply clean the wound with soap and water, then cover it with a clean, dry dressing; if possible and without putting yourself at risk, photograph the snake from a distance to help with identification — never handling it, even if it appears dead. Then go without delay to the nearest hospital.
In Cambodia, rapid access to care makes all the difference. According to health authorities in Banteay Meanchey province, one must “try everything to get the victim to hospital within three hours” of the bite to maximize the chances of survival. Beyond that window, the prognosis worsens significantly. Venoms cause two broad types of effects: hemorrhagic (uncontrolled bleeding, typical of vipers) or neurological (drowsiness, numbness, breathing difficulty, typical of cobras and kraits) — two emergencies that require rapid hospital care and the appropriate antivenom.
In Siem Reap, antivenom is available at Royal Angkor International Hospital, according to the US CDC, as well as at Kantha Bopha Hospital, which treats children free of charge and frequently sees several bite cases a day during the rainy season. In Phnom Penh, Calmette Hospital also stocks antivenom. Health authorities, like the CDC, strongly advise against traditional medicine (thnam boran) for snakebites: far from harmless, this practice delays effective treatment and can worsen a patient's condition.
An underestimated public health issue
Snakebite ranks, according to herpetologist Thy Neang as quoted by the Khmer Times, among the deadliest health risks in Cambodia, just behind landmines and malaria. Yet most rural victims only go to hospital as a last resort, after traditional treatments have failed — which is why many arrive already in critical condition, in neurotoxic coma or with severely necrotic limbs. The lack of reliable data on the true number of cases, combined with the high cost of antivenom in rural facilities, continues to complicate the country's response to a risk that is real — but largely preventable, provided the right reflexes are known.
This article is intended for informational purposes only and is not a substitute for professional medical advice. If bitten by a snake, go immediately to the nearest hospital.
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