What's symbiotic about the relationship between Hawks and Prairie Dogs? What do the Prairie Dogs get out of the deal??

I'm torn between gun rights and a natural (I think) revulsion at the idea of exploding ground squirrels. Whatever happened to .22 rimfire rifles?

I know that scientific data sometimes over-rules intuition from first hand observation, but I think all of us have developed a healthy suspicion regarding scientific data that we're told is irrefutable, when common sense says something entirely different...Geo