I know what you mean about cat snoring, and dogs. Just never seen a horse in a deep sleep, flat out, snoring before. I think you could be right though; it has only been since she has got very big. We think it's likely she will drop tomorrow night, which is a nuisance as we are away for 2 weeks from early tomorrow morning (forced holiday due to a wedding in Spain). Should be going to a funeral too but the wedding was planned first.