Ключевые слова: adder, aggressive, animal, autumn, black, blurred background, brown, close up, common, common viper, crawling, creature, dangerous, dry, endangered, environment, fall, field, forest, grass, gray, habitat, herpetology, land, looking, lying, meadow, natural, nature, observing, on the ground, orange, outdoor, reptile, rough, season, shallow depth of field, side, sight, snake, species, tangled, toxic, vertebrate, viper, vipera, vipera berus, wilderness, wildlife, yellow,