Why do prairie dogs live in the desert?

The prairie dog in the grassland biome in North American prairie and grassland where there are three distinct areas of prairie - Tallgrass prairie, Mixed-grass prairie and Shortgrass prairie. In the United States, the greatest stretch of grassland is the prairie, extending from the Appalachians in the East to the Rocky Mountains in the West. Being in the center of the North American land mass, far from the moderating influence of major bodies of water, there is a great range of annual temperature.The dominant vegetation in these biotic communities is blue grama, mixed with galleta grass, Indian rice grass, and other grasses.

Prairie dogs are rodents and live in aggregations called towns or colonies. Prairie dog burrows can be as much as 15 feet deep and 60 feet long and sometimes connect with other burrows.