Does anybody know what this could be? It happened the first time when he was around 6 months old, he has been to the vet a few times and had multiple tests done but the vet can’t seem to figure out what it is. Usually it will first appear as a bald spot and then over the next few days turns into a moist sore, and then within a week or so it starts healing and the fur grows back. This is probably the 5th or 6th time it has happened but this time it was worse, the photo with the big bald spot is one that appeared a few weeks ago and is now in the healing stage but now the smaller one just appeared today. I will take him to the vet again but I’m getting frustrated not having an answer, has anyone seen something like this before?