Hard to say, but this could also be from a vaccine. My Wylie has a permanent area like this from a vaccine, but some of the hair eventually grew back. The dead hair area is now about the size of a quarter.
You should get it checked out though - esp. bc of the blackened/dark area.
__________________ ~ A friend told me I was delusional. I nearly fell off my unicorn. ~
°¨¨¨°ºOº°¨¨¨° Ann | Pfeiffer | Marcel Verdel Purcell | Wylie | Artie °¨¨¨°ºOº°¨¨¨° |