Ключевые слова: adder, animal, beautiful, brown, closeup, colorful, common, danger, dangerous, deadly, endangered, eurasian, european, fauna, fear, fearsome, forest, grass, green, ground, habitat, herpetology, lifting, macro, natural, nature, occupation, outdoor, outdoors, poikilothermic, poison, poisonous, reptile, scales, snake, standing, toxic, venom, venomous, viper, vipera, vipera berus, viperidae, viperinae, wild, wildlife, woods, zoology,