Something Is Digging Up Small Pieces Of Lawn

Question From: K. McAndrews - MICHIGAN
Q: I did send these photos in my last e-mail. Apparently, they did not come through. I hope you can see them this time. Thank you fir your help. Kathleen McAndrews
(Click Images To View Larger Versions)

A: It's animal damage. Could be voles that feed on grass roots or skunks that dig looking for grubs or worms. Best And Happy Yardening, Nancy.