A savanna is a biome that is located in between a tropical rainforest and a desert. They are grasslands with isolated trees and shrubs. They warm all year long and have a dry season and a wet season. In the dry season averages 4 in and between December and February there is no rain. In the wet season, there is around 15 - 25 in of rain. The savannas have many large hoofed mammals and the largest savanna are found in Africa, Australia, and South America.