Ключевые слова: adder, aggressive, ammodytes, animal, attack, basking, biology, brown, danger, dangerous, deadly, europe, european, fast, fauna, habitat, herpetology, horned, hunter, large, long, longnosed, male, nature, nose, nosed, nosehorned, phobia, poison, poisonous, portrait, predator, reptile, reptilia, serpentes, snake, species, squamata, toxic, toxin, venom, venomous, vertebrate, viper, vipera, viperidae, viperinae, wild, wildlife, zoology,