Ключевые слова: amphibian, animal, animals, aquatic, arvalis, biology, brown, closeup, common, concept, coupling, cute, cycles, eggs, europe, european, fauna, frog, frogs, habitat, life, love, macro, marsh, mate, mating, nature, new, pond, rana, red, reflection, reproduction, reproductive, season, sex, sexual, spawn, spring, tadpole, tadpoles, temporaria, toad, two, water, wild, wildlife,