Chipmunks are a very difficult target. I can hit them if I spot one in a field. But more often than not they are in a tangle of leaves and branches on the ground. It takes patience and a very accurate rifle.
Tracking a few squirrels running through the tops of some trees 120 yards out through a rifle scope until one of them stops long enough to let off a shot and you see it fall out of the tree. That is pretty exciting. Any closer than that and they are very easy to shoot with my .17 HMR.
Bobcat are native to Georgia, but I have never seen one in the wild. It might just be because I haven't tried very hard to encounter one.