Adder Bites: Dogs...what to do..

What to Do If Your Dog Is Bitten by an Adder in the UK

Adder bites are uncommon but potentially serious for dogs in the UK, particularly during spring and summer when snakes are more active.

Knowing how to respond quickly can make a life-saving difference. This guide explains first aid, symptoms, and veterinary care for dogs bitten by adders.

Understanding Adder Bites in Dogs

The common European adder (Vipera berus) is the UK’s only venomous snake.

Its bite is usually defensive rather than aggressive, and bites to dogs often occur when a dog disturbs or steps on a snake in woodland, heath, or grassy areas.

Adder venom contains toxins that can cause:

• Swelling and pain at the bite site

• Bruising or redness

• Lethargy or weakness

• Vomiting or drooling

• Laboured breathing (in severe cases)

• Collapse or shock

Dogs at high risk include puppies, small breeds, and older dogs, as they may be more sensitive to venom.

Immediate Steps to Take

If your dog is bitten by an adder, act fast but stay calm:

1. Keep Your Dog Calm

Limit movement; activity spreads venom faster through the bloodstream.

If possible, carry your dog instead of letting it walk.

2. Identify the Bite

Look for two small puncture wounds close together, usually on the legs, paws, or muzzle.

Swelling and redness typically develop within minutes.

3. Remove Constrictive Items

Take off collars, harnesses, or tight clothing near the bite site, as swelling may occur quickly.

4. Avoid Harmful First Aid

Do not try to suck out the venom

Do not cut the bite site

Do not apply ice or tourniquets

Do not give painkillers unless prescribed by a vet, as some medications are toxic to dogs

Getting Veterinary Help

Call your vet immediately or go to the nearest 24-hour veterinary hospital. Inform them that your dog has been bitten by an adder, the location of the bite, and the time it occurred.

Treatment may include:

Intravenous fluids to support circulation

Pain relief and anti-inflammatory medication

Anti-venom (rarely used in the UK, only in severe cases)

Close monitoring for complications such as swelling, shock, or breathing difficulties

Managing Symptoms While En Route

While travelling to the vet:

Keep your dog as still and calm as possible

Apply a loose bandage above the bite site only if instructed by a vet, to slow venom spread

Offer no food or water, unless the vet advises

Recovery and Aftercare

Swelling may last 24–48 hours, even with treatment

Dogs often need rest for several days

Monitor for secondary infections or unusual behaviour

Avoid walks in known snake habitats until recovery is complete

Preventing Adder Bites

While adder bites are rare, prevention is always best:

Keep dogs on a lead in snake-prone areas

Avoid letting dogs roam through tall grass, heather, or dense undergrowth

Teach your dog recall commands to prevent chasing wildlife

Keep gardens and paths tidy to discourage snakes

When to Seek Emergency Help

Seek immediate veterinary care if your dog:

• Collapses or appears very weak

• Has severe swelling around the bite

• Shows difficulty breathing or vomiting

• Appears disoriented or in shock

Prompt action significantly improves recovery outcomes.

Conclusion

An adder bite can be serious but manageable with calm, fast action and veterinary intervention. Keep dogs safe by supervising them in snake habitats, acting quickly if a bite occurs, and following your vet’s guidance for recovery. Knowing what to do can save your dog’s life and reduce complications.

Quick Reference: Adder Bite Checklist for Dog Owners ✅

Stay calm and keep your dog still

Remove collars or tight items near the bite

Identify bite site (two puncture marks)

Do not cut, suck, or ice the bite

Call your vet immediately if your dog is struggling

Transport calmly to veterinary care

Follow post-bite recovery instructions

Learn more about:

Adder

Smooth Snake

Grass Snake

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