Wild Adder Snakebite in Dogs: Prevention and First Aid

Adder bites to dogs are a genuine welfare emergency that requires prompt veterinary treatment, and preventing bites through awareness and management is better than dealing with the consequences.

Key Facts

Adder bites to dogs are most common in spring when adders first emerge and are warming up — they are less able to escape rapidly
Signs appear within 15 minutes to 2 hours — swelling at the bite site, pain, lethargy, vomiting, and collapse in severe cases
The vast majority of dogs survive with prompt veterinary treatment including anti-venom in severe cases
Anti-venom (Zagreb anti-venom) dramatically reduces recovery time and severity when administered promptly
Small dogs, dogs bitten on the face, and those bitten multiple times are at highest risk of serious consequences
Adder bites to humans are rare and seldom fatal in otherwise healthy adults, but always require medical assessment

Welfare Considerations

Adder bites cause acute welfare suffering in affected dogs — rapid onset of intense swelling causes pain at the bite site, and systemic envenomation causes nausea, weakness, and cardiovascular depression. Without anti-venom, recovery is slow and painful, taking 5-7 days or more. With prompt veterinary treatment and anti-venom where indicated, most dogs recover within 24-48 hours with significantly less suffering. The welfare priority is immediate veterinary assessment — never wait to see if signs resolve. Carrying dogs away from adder habitats rather than walking them through dense vegetation in spring reduces bite risk. Preventing bites through awareness and recall training in adder habitats is the most welfare-protective approach.

What You Can Do

Seek immediate veterinary assessment if your dog is bitten by an adder — carry your dog to the car rather than allowing it to walk
Keep dogs on leads and out of dense vegetation in known adder habitats during spring and early summer
Never attempt to suck out venom or apply a tourniquet — these worsen outcomes and delay appropriate treatment
Contact your vet before visiting adder habitats in spring to check their anti-venom stocking in case of emergency