The diet for rabbits should provide as much as possible for their natural needs. A rabbit is a true herbivore and therefore has a long digestive system. Rabbits have a high need for crude fiber in the form of hay. Rabbits can produce 2 kinds of manure; the fully digested manure in the form of hardened rabbit droppings and the soft dung balls that are eaten again. The soft dung pellets, rich in vitamin B, are absorbed and swallowed by the rabbit directly from the anus. This process is similar to rumination.