The adder is the UK's only venomous snake and has declined significantly due to habitat fragmentation, persecution and disturbance, requiring targeted conservation action.
Adders illegally killed by members of the public experience traumatic death from spade strikes, crushing or drowning. Animals caught in illegal snares suffer injury and stress. Habitat fragmentation creates isolated populations with reduced mate availability and increased inbreeding. Adder bite victims, while medically significant, are rarely fatal; panic responses that lead to habitat clearing cause more welfare and conservation harm than bites.