Wild Adder Conservation and Human Conflict

Adders are Britain's only venomous snake and face significant population declines, with human conflict representing both a welfare and conservation challenge.

Key Facts

Adder populations have declined by an estimated 60-70% over the past 30-40 years in Britain
They are fully protected under Schedule 5 of the Wildlife and Countryside Act 1981
Adders require a mosaic of habitat including south-facing basking sites and dense cover
They hibernate from October to February and are cold-blooded, relying on external heat
Adder bites in humans are rare - approximately 100 cases annually in Britain - and rarely fatal
Dogs are bitten more frequently than humans, particularly at dusk when adders are active
Illegal killing of adders out of fear is a significant mortality source
Fragmentation of heathland and woodland edge habitats has isolated populations

Welfare Considerations

Adders are persecuted through fear-based killing that is both illegal and ecologically harmful. Individual adders encountered on walks are frequently killed despite posing minimal risk. Adders caught by dogs experience stress, injury and sometimes death from handling. The welfare of adders and the conservation of increasingly isolated populations are closely linked - public education that reduces fear-based persecution is essential. Promoting accurate information about adder behaviour and bite risk prevents unnecessary killing.

What You Can Do

Adders are legally protected - never deliberately kill or disturb one, regardless of fear
Keep dogs on leads in known adder habitat, especially at dawn and dusk in spring and summer
Contact a vet immediately if your dog is bitten - treatment is effective when prompt
Report adder sightings to Amphibian and Reptile Conservation to support population monitoring
Share accurate information about adder ecology and low bite risk to reduce persecution