Thanks for the response. She is indoors only. We let her play in the basement, it's pretty safe down there but I wonder if she didn't find an errant nail or something that she may have snagged on.
We noticed this small bald spot on our cat's rear leg with a red dot in it, about the size of a pea. This picture was taken several days ago, and we thought it looked like it was healing. It is still there today and looks more open now - not sure if maybe she was licking it or something. We...