A.It would be good to have a veterinarian do a fine needle aspiration for cytology (no sedation required). I say this because I have recently seen several mast cell tumors in three-month-old dogs. One of the characteristics of these tumors is that they do fluctuate in size when manipulated. If this or something similar were the diagnosis, it would make a big difference in the proper approach to therapy. Remember that the nickname for the skin is the “third kidney”. It is a powerful eliminative organ. These may just be cysts that will either run their course or could be lanced by your veterinarian. Also, it is common for animals to have local reactions to vaccinations and the neck is a common site. Before giving Juli any more vaccines, please read the series of articles about over-vaccination in the Animal Wellness library.