Two black-tailed prairie dogs (Cynomys ludovicianus) meet at the entrance to a burrow in the Rocky Mountain Arsenal National Wildlife Refuge near Denver, Colorado. Black-tailed prairie dogs are native to North American grasslands although their populations are well below historical levels. Rocky Mountain Arsenal National Wildlife Refuge was established in 1992 on the site of a former U.S. Army chemical weapons manufacturing facility.
Add to Cart Add to Lightbox Download