Ключевые слова: adder, animal, basking, beautiful, berus, brown, camouflage, closeup, common, creature, crossed, danger, dangerous, detail, endangered, environment, eurasian, european, fauna, fear, fearsome, female, frightening, herpetology, natural, nature, poikilothermic, poison, poisonous, portrait, predator, reptile, scales, scary, serpent, snake, species, toxic, venom, venomous, viper, vipera, viperidae, viperinae, wild, wildanimal, wildlife, zoology,