Ключевые слова: amphibian, animal, background, beautiful, biology, breeding, closeup, common, copulation, couple, detail, europe, european, eye, fauna, female, fertilization, frog, goggle eyed, green, impregnation, instinct, lake, love, macro, male, mating, natural, nature, outdoor, pair, pairing, pond, pool, reproduction, season, sex, sticky, temporary, three, two, up, water, wild, wildlife,