Where are the prairie dogs?

My husband Jim did this video, and he also talks about the bison (buffalo) in it, so I added info on them .....The free roaming herd of nearly 1,400 bison at Custer State Park is one of the world’s largest publicly owned bison herds. The annual roundup keeps the population in balance with the available land and resources. Most return right back to their home, the grasslands of Custer State Park. The event is open to the public and attracts more than 14,000 people each year.