Animal and plant life correspond to the three climatic zones. In the Saharan region, the only flora is the date-palm groves of the oases. Palms and acacia trees grow in the Sahelian region. The southern, or Sudanic, zone consists of broad grasslands or prairies suitable for grazing. Elephants, lions, buffalo, hippopotamuses, rhinoceroses, giraffes, antelopes, leopards, cheetahs, hyenas, snakes, and a variety of birds are found in the savanna country.