Lately when we go out for walks, Chloe will sniff around, like normal but then she does this really weird thing. She'll find a spot that is particularly interesting to her, rub her face in the grass and then, before I know it, she's on her back rolling around in that spot. She'll do this until all of the scent is gone and then move on to another interesting smelling spot and then the ritual starts all over again. Does anyone else's corgi do this? What the heck is going on here?