[QUOTE=Pronzini;8133454]
Maybe not entirely unknown but very uncommon. Generally that only happens if there is a physical reason for a break, a very late foal or the mare was bred and barren. Mares only have so many foals and the younger they are the better. It is rare for a serious breeder to voluntarily give up a prime foal bearing year of a valuable mare but the Mosses are so under the microscope with this horse maybe they are doing the uncommon.[/QUOTE]
Well, her foals were later and later, so at some point you need to skip a year or wind up with a baby born in a really bad month (and you might get away with hiding a December baby until January in some barns, but no way they pull that off with Zenyatta.)