We recently took our 8 year old and 3 year old maltese dogs for vaccinations. A week later one developed 2 large cysts and the other 1 on the neck/shoulder. This has never happened before. We just moved here from Australia, so this was their first rabies shot with the regular ones. What is the cause of these lumps and why has it happened this time?
This sounds like a vaccine reaction. It is common and usually goes away in a few weeks. Try iceing it a daily. Have the vet check it out to be on the safe side. vetcare