Cold deserts have little rainfall and low temperatures below 0°C. The two main polar regions that contain cold deserts are the Arctic and Antarctic. Animals that live in cold deserts, like polar foxes, lemmings, and reindeer, have adapted thick fur or fat to help retain heat. Vegetation is also adapted to the extreme climate and consists mainly of algae, lichens, mosses, and dwarf shrubs. Climate change is negatively impacting some cold desert regions as temperatures rise and habitats disappear.