So I come home from work to find that my dog has destroyed about 1000 sq ft of lawn

All in the same area, not spread out across the yard. She has a huge fenced in yard and chose to literally scrape the grass off of it least 1000 ft.² over the course of the 12 hours I was gone yesterday. Not digging holes, she just removed the grass. Looks like someone with a metal detector in a spade spent a week there finding bottle caps everywhere. Is there some sort of insect that dogs will smell and go after? This is a huge mystery to me. But come spring time that area of the yard is going to take forever to recover