How are grasslands classified?

The Grasslands may be classified into steppes and savannahs. In a steppe prevailing vegetation is grass, as in the pampas of South America and in the prairies of North America. The fauna is primarily formed by herbivores, like ungulates and rodents. The savannahs present small trees, for instance in the Brazilian cerrado or the African savannahs. The fauna is varied; in the Brazilian cerrado there are animals like lizards, ostriches, armadillos, jaguars, and so on., and many types of insects; the African savannahs are the home of large herbivores and carnivores, like zebras, giraffes, antelopes, leopards and lions.