I was told by a breeder before the race that Xtra Heat had her winter coat & would probably not run her race for that reason, though why that would be true on a day like Sat is not clear to me. She looked the same to me, though my lack of skill in this area is such that it is not 100% certain I would have picked up on the fact if she was wearing mittens. I've also been told on a number of occasions that fillies or mares were "horsing", which I understood to mean were in heat. I do not remember a single instance where such a horse won, which is one among many reasons one might conclude that the nos, while important, do not always tell the entire story.