Snake Bites and Dogs: Carry, Do Not Let Them Walk

Treat every snake bite as venomous, carry your dog rather than letting it walk, and ignore every piece of first aid you have seen in a film.

Dogs get bitten on the face and the front legs, because they investigate with their nose and their paws. It happens fast, often with a single yelp, and frequently the owner does not see the snake at all.

The rule is simple and it does not depend on identifying anything: treat every snake bite as venomous until a vet tells you otherwise.

What to do

1. Keep your dog calm and still. Movement drives venom around the body through muscle action.
2. Carry your dog to the car. Do not let it walk out, even if it seems able to.
3. Ring ahead and go, so antivenom can be ready when you arrive.
4. Keep the bitten part below the level of the heart if you can manage it without stressing the dog.
5. Note the time and where on the body it was bitten.

The list of things that make it worse

Almost all popular snakebite first aid is actively harmful, and it persists because it is dramatic and it is in films.

No tourniquet. It does not hold venom where it is, and it kills the tissue below the band.

No cutting. Slicing the bite introduces infection and removes no venom.

No suction, by mouth or with a kit. It has been studied and it recovers nothing meaningful, while costing minutes.

No ice, no cold packs, no heat. Cold traps venom in the tissue and worsens local damage. Heat does its own harm. Older guidance recommended cold packs and it has been superseded.

No human medicines. Antihistamines, aspirin and painkillers can interfere with treatment or worsen the bleeding the venom is already causing.

No food or water on the way in.

Leave the snake

Do not chase it, do not try to kill it, and do not bring it, alive or dead, to the clinic. A dead snake can still bite by reflex for up to an hour, and a bitten owner turns one emergency into two.

Photograph it only from a genuinely safe distance. Otherwise describe it: colour, rough length, the shape of the head and any pattern. Treatment does not wait on identification.

What you will see

• A sudden yelp, then limping or lifting a paw, often after nosing through grass, rocks or a burrow
• Two puncture marks close together, though fur hides them well and sometimes there is only one, or none
• Swelling coming up quickly, usually on the muzzle, face, neck or a front leg
• Bleeding from the bite that will not clot properly
• Bruising spreading outwards over minutes to hours
• Drooling and trembling
• Vomiting
• Weakness, wobbliness, collapse
• Pale or blue gums
• Difficulty breathing, particularly after a bite to the face or neck

The face and neck bites deserve particular urgency, because swelling there can close an airway. And do not be reassured by a small snake or a small-looking bite. Juvenile snakes can deliver a full dose of venom, and a dog that looks stable in the first half hour can deteriorate significantly as things progress.

Where dogs meet snakes

In the UK the adder is the only native venomous snake, and bites cluster in spring and summer on heathland, moorland, coastal paths and sand dunes, usually when a dog goes off the path into scrub. Across Europe, the Americas, Africa, Asia and Australia the species vary enormously and so does the severity.

Wherever you are, the practical advice is the same. Keep dogs on the path rather than in long grass, scrub and rock piles, be most careful in warm weather and around dawn and dusk, and, if you walk regularly in snake country, find out now which of your local clinics actually holds antivenom. That is a much better question to have answered in advance than from a car park with a swelling dog on the back seat.

Sources

This article was written using guidance from AVMA, the American Veterinary Medical Association, the professional body representing US veterinarians; Merck Veterinary Manual, a peer-reviewed reference used by veterinary professionals worldwide; and PDSA, the UK's largest veterinary charity, whose Pet Health Hub is written by its own vets and nurses. This guidance is for general information and does not replace a consultation with your own veterinarian. In an emergency, always contact a vet. Read [how we write our health guidance](https://rochsociety.com/how-we-write-our-health-guidance/). Last reviewed July 2026.