Ключевые слова: agriculture, animal, beef, bell, biogas, bovine, breed, breeding, cattle, countryside, cow, day, domestic, dung, ecological, energy, environment, excrement, farm, female, fertilizer, grassland, green, head, herbivore, horned, horns, husbandry, industry, livestock, mammal, manure, milk, natural, nose, nostrils, organic, pastoral, pasture, pats, peaceful, portrait, renewable, residue, resting, ruminant, rural, summer, tranquil, waste,