They also prevent erosion by wind and water because of their valuable topsoil. The largest savanna in the world is in Africa. In fact, nearly half of the continent is covered by savannas. It is warm all year around and is divided into a rainy and a dry season. During the rainy season all is green and lush, and during the dry season all is brown.
Fires are a natural part of the life cycle on the savanna.
It is a way for the land to cleanse itself. Animals not pictured in the big book which also live on the savanna include the hippopotamus, aardvark, warthog, gazelle, springbok, and eland. Other birds include ostriches, flamingos, and secretaries. There is a threat to the savannas as many are being turned into land for ranching and farming. Some countries in Africa are protecting them by making the savannas into national parks.