Southdown sheep reach the grapes on the vines. Baby Doll breeders claim that their sheep are closer to the original English Southdown than are the commercial Southdown sheep being grown today. Mature weights for rams range from 190 to 230 lb (86-104 kg); ewes weigh from 130 to 180 lb (59-81 kg). From mature ewes, fleece weights are between 5.0 and 8.0 lb ((2.5 - 3.6 kg) with a yield of 40% to 55%. The fleeces are considered medium-wool type with a fiber diameter of 23.5 to 29.0 microns and a numerical count of 54 to 60. The staple length ranges from
Breed registry animal's "papers". Registration papers may consist of a simple certificate or a listing of ancestors in the animal's background, sometimes with a chart showing the lineage. There are breed registries and breed clubs for several species of animal, such as dogs, horses, cows and cats. The US "Association of Zoos and Aquariums" (AZA) also maintains stud books for captive species on display ranging from aardvarks to zebras. Kennel clubs always maintain registries, either directly or through affiliated dog breed clubs. Some multi-breed clubs also maintain registries, as do non-affiliated breed clubs, and there are a few registries that are maintained