One of our three native snakes, the adder is the UK’s only venomous snake.  However, they are not aggressive and no one has died from an adder bite in the UK for at least 20 years.



Order: Squamata

Family: Viperidae

Species: Vipera berus

IUCN Red List Status:  Least concern.

Distribution:  Found in woodland, heathland and moorland across UK, except Channel Islands, Scilly Islands, Northern Ireland, Scottish islands and Isle of Man.  Widespread across Europe from Scandinavia and the Baltic to UK and France, then eastwards to Russia, Mongolia, Democratic People's Republic of Korea and northwestern China.

Habitat:  Rough open countryside such as heathland and moorland and the edges of woodlands, where plenty of sunlight hits the ground.

Life-span:  15-20 years.

Size:  Males up to 60cm, females up to 80cm long.  Weight: 50-60g (males) and 80-100g (females).


Read More: Appearance

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