I'm freaking out! Buster received his yearly vaccinations about 3 weeks ago. He's never had any negative reactions until this last time. For the first two days, he vomited and itched the spots like crazy. In fact, he created two bald spots at the site of the vaccination. Ultimately, the itching went away and the fur is starting to grow back. However, I checked it out today and the spots look very dark! I called the vet and scheduled an appointment for tomorrow morning. They couldn't say anything without seeing it directly. Anyone know what this could be? I am in tears because I fear it is dead tissue and I'm worried about the aftermath or procedure to remove it.