This is a photo of elephant dung, which is pervasive in the reserve and national park that we visited in South Africa. I asked my wife to take it (I post-processed it) because the photo is a good reminder of some really fascinating information.
The national park that we visited asks that drivers avoid the dung because dung beetles use it for food. (They use buffalo dung for food and as a breeding nest.) The Addo dung beetle, which is a flightless subspecies, is endemic to South Africa and now exists only in certain areas of the country. If you are familiar with the iconic scarab of Egyptian lore, it is a dung beetle.
Notice the large amount of vegetation in the elephant dung. This is typical, as only a relatively small amount of food the elephant eats is actually digested. The stomach is used more for storage than digestion. That explains why elephants are nearly constantly grazing. Otherwise, their huge bodies wouldn't receive enough nutrients.