I waled the dogs in the big fields (a few acres) the horses had been moved on and I found some oblong and round flattened space in the waste high grass, I thought it may have been a deer getting through the fencing a bedding down for the night but there was so many flattened areas and the deer always leave a path through the grass, it was after a storm, could it have been wind and rain?? It has happened a lot!!