Ключевые слова: adder, adder snake, animal, background, basking, berus, british, brown, closeup, common, crossed, danger, dangerous, european, european adder, european viper, eye, fang, fear, february, frightening, green, herpetology, male, natural, nature, pattern, poison, poisonous, protection, red, reptile, scales, skin, snake, spring, the common european adder or common european viper, tongue, toxic, uk, venom, venomous, viper, vipera, vipera berus, viperidae, wild, wildlife, zoology,