Natural vegetation is chiefly of the savanna type, luxuriant in the rainy season, brittle grass and shrub during the dry season. Dense belts of reeds are found along the coastal lagoons. Much of the largest wildlife has been exterminated in the southern area, but in the north, elephants and lions still can be found. Hippopotamuses and crocodiles live in and along the rivers, and monkeys are fairly common. The coastal swamps abound in snakes.