Evo said these may be ringworm or staph. This is a dog I gave away shes not on my yard. What I do know is they have went away and came back. They haven't spread to any other dogs. The bumps fell like they are full of fluid. At one time one popped and it bled a lot or it was full of blood to begin with. He had been putting iodine on them and it helps the go away. She had one in her ear it went away and never returned.