I was watching my ewe's a few days ago and both suddenly dropped their noses to the ground and seemed to freeze for a moment. If I hadn't been watching them and both hadn't done at the exact same time I probably wouldn't have seen it. Since them I have seen them repete the head drop from time to time, they seem to be smelling the ground? and they often run afterward. so, are they just catching a scent? or something else?