Prairie dogs sleep though the coldest weather to save energy. In the winter, Prairie dogs spend most of there're time in the winter in there burrow to stay warm.
When the male digs his burrow, he uses his front paws to dig, then pats the extra dirt with his nose and that soon creates a mound.
Prairie Dogs live in a underground area called a burrow. There a many chambers in a burrow. There's a chamber for everything!