Elephants are mega-herbivores. They are generalists that can thus utilize a variety of food resources. Depending on availability, elephants feed on browse and grass. When fresh grass is available this is the preferred diet. Twigs, bark, and roots also form part of the diet, especially in the dry season, when no grass is available. In mineral-poor areas, minerals are often supplemented by eating soil and salt. An adult bull will consume 300–400 kg of fresh forage per day, and a cow about 250 kg.