I've learned some things recently, about the difference between chipmunks and ground squirrels. Such as, chipmunks are smaller, have stripes on their faces and tend to walk with their tales raised. Thank you wikipedia.
We have tons of ground squirrel holes in our yard and you see them frolicking around all the time. I *love* them. I snapped up some pics of some friendly baby ones who were popping up to say hi.