We were able to get into our local vets office today. She said that the red nipple was not getting proper blood flow. And would fall off on it's own. It is nothing to worry about, unless the area around it changes and gets infected. She took out the stitches from all the incisions. She said even though they were meant to fall out on there own. She has seen them stay in other animals over 3 years. She also said every thing looked good. The incisions were so well done there is not much of a cut line scar.