Ключевые слова: adder, basking, beautiful, brown, closeup, coldblooded, colorful, danger, dangerous, deadly, endangered, endemic, european, fauna, female, ground, habitat, herpetology, hungarian, iucn, lethal, meadow, natural, nature, poison, poisonous, predator, protected, rakosiensis, rare, reptile, reptilian, romania, scales, scarce, scary, snake, species, threatened, toxic, transylvania, ursinii, venom, venomous, viper, vipera, viperidae, wild, wildlife, zoology,