Adder (Vipera berus) in closeup, before shedding skin, Northumberland National Park, England, United Kingdom, Europe

Adder (vipera berus) close-up of head, peak district, uk

Adder (vipera berus) close-up, peak district, uk

Adder (vipera berus) curled up on rock, view from above, peak district, uk

Adder (vipera berus) culed up on rock, view from above, peak district, uk

Adder (vipera berus) male, close-up of head, tongue extended, peak district, uk

Adder, Vipera berus, sunning on rock, Scotland, UK

Adder (Vipera berus), male after moulting, in the bog

Tongued adder (Vipera berus) in a moor, reptile, poisonous snake, Oldenburger Muensterland, Germany, Europe

Common European Adder or Viper (Vipera berus), Berchtesgaden National Park, Bavaria, Germany, Europe

Common European viper (Vipera berus), animal portrait, Emsland, Lower Saxony, Germany, Europe

Common European viper (Vipera berus), Emsland, Lower Saxony, Germany, Europe