My kitty seems to be losing the fur on the back of her ears. It's not happening anywhere else. The rest of her fur is still soft and thick.

The back of her ears are about half-bald now. The skin doesn't look raw or irritated, just naked. She doesn't seem bothered by it. She hasn't been scratching her ears or anything. The fur just isn't there.

I've seen animals with mange. This doesn't look like that. It's not spreading to other parts of her body.

I know humans can experience hair loss during pregnancy. Can cats go through the same thing? She's very pregnant.

Any ideas what this could be?

I don't have the money right now to take her to a vet. Since it doesn't seem to be affecting her health, or otherwise bothering her, I'm more curious than worried.