Folivores are animals that primarily eat leaves as their main source of nutrition. This diet is often low in calories and nutrients, so folivores have adapted specialized digestive systems to break down tough plant material. Common examples of folivores include sloths, koalas, and certain species of monkeys. These animals typically have slow metabolisms and may spend a significant amount of time resting to conserve energy. Their adaptations, such as strong molars for grinding leaves and a large cecum for fermentation, help them extract the necessary nutrients from their leafy diet.