Minecraft wiki entry for Tundra, associated text: All grass blocks are covered in top snow. The terrain is barren and has few oak trees and dandelions or poppies. Ice is commonly found over water. Snowfalls occur and is the weather of tundras. Tundras generated when the temperature is below 50% and the rainfall is less than 20% and could often be found near snowy taigas, which had a higher rainfall value. They usually consisted of low plains and gentle hills but in some cases, it could be mountainous. Survival in this biome could be difficult, especially if the tundra is large as trees were rare. Chickens, sheep, cows and pigs spawned in tundras.