Mares Every mare producing foals for the WSI must be inspected by our Mare Inspection Committee. If the mare meets our criteria for approval she becomes an Approved Mare and is entered into the Approved Book. When the Approved Mare produces her first foal for the WSI she is assigned a unique damline number. Every descendant of the mare, both male and female, is classified under this damline number; the damline number appears in the passport of each descendant. If the mare does not meet the criteria for approval there are two things that could happen. The inspectors might explain to the owner that the mare is not approved and her foals cannot be registered by WSI. The other possibility is that the inspectors invite the mare to participate in our Genetic Development Program. The Genetic Development Program is designed for certain mares that do not meet the standard for inclusion in the Approved Book but nevertheless have valuable characteristics that could be built upon through a structured breeding program to produce a daughter that hopefully would meet the standard for approval. In such cases the Mare Inspection Committee, based on a unanimous vote, may authorize the mare to be entered into Register D and her foals to be recorded in Register B subject to the mare owner's ongoing participation in the Genetic Development Program. The number of mares in the Genetic Development Program can be no larger than 25% of the total number of actively breeding mares in the WSI.