I recently saw a mother with a tiny blister on a nipple skin tag which
grew during the pregnancy. It did not cause her any pain, and was
filled with clear fluid, not milk, so I wasn't worried about plugged
ducts. We worked on positions that would minimize any further friction
on the nipple tip and the problem resolved. She also used a little bit
of an ointment for moist healing during the healing time.
Just looked up "ovine" and it is of or relating to sheep.
Carla (just north of Washington, DC)