There's a family of groundhogs/woodchucks living under the wooden plank path in my aunt's backyard. Mom has two babies, who are nearly grown. I figure they'll move on once they're ready. They eat the plentiful burdock, so my aunt's not complaining too much. (First thing I did after setting my stuff down was go out to see if I could see them, and the mom had her chin on the plank while lying in a hole made from the planks shifting due to large roots.)

The benefit of groundhogs is ground aeration, if their burrows stay open.