It's most likely an abscess - and you NEED to see a vet asap. The infection goes inward instead of bursting through the skin and it can make your dog VERY sick. Don't mess around with a potential abscess. They smell like rotting flesh, basically, bc that's exactly what's happening.
__________________ ~ A friend told me I was delusional. I nearly fell off my unicorn. ~ °¨¨¨°ºOº°¨¨¨° Ann | Pfeiffer | Marcel Verdel Purcell | Wylie | Artie °¨¨¨°ºOº°¨¨¨° |