Mary, watched, spellbound as she continued to change. She was shrinking still, her hips crossing the boundary from curved to flat, along with the rest of her body. As her breasts shrank away, she saw the white fur growing thicker, course and bristly all over her body. Her remaining fingers merged together, until she had just two with a thumb, each tipped with a thick nail almost like a hoof. Her feet weren't much better off, as her ankles raised and her feet turned to hocks, the toes merging until they were nothing more then cloven hooves. Mary felt something push out behind her as a long bristly tail grew out.
Her udder started to shrink and melt away, and Mary started to panic. What if she got stuck this way. She turned, trying to run, but was unused to hooves. She stumbled and fell right in front of the mirror, getting a full view of her face. The patterns of a cow were all over her body now and her nose and mouth had flattened out to a cow's muzzle. Her teeth were flat, her eyes moving to the sides of her head as two tiny horns poked from her skull. Her hair had remained its normal color and consistency.
Quivering, Mary got up. There was no sign of the udder, in fact, her whole body was now that of a little girl, a cow girl.