[AnAmericanMother]

That doesn't look like rain rot. Rain rot isn't that white or in one big patch like that, and the skin doesn't come off in a single piece. I wonder if she didn't injure the skin on top by rubbing or tearing it on something.

[Ramius]

is it just behind one ear? or both?

[HairOfTheDog]

Thanks.... I would like to think it is not a fungus, but that she just ~did something~ out in the pasture. Was odd to see the skin die and fall off without an injury that I noticed, but then again I was gone last week and they were at a sitter's house. It's weird!

Ramius.... just one ear.