This week I was happy to see not one, but two female-to-animal tf this week when I went to my local comic store.
The first is in Wonder Woman #17, and features a woman-to-anthro-cheetah tf. For people who are familiar with the Cheetah character, she's a Wonder Woman villainess who dresses like a cheetah, and sometimes has some small anthro qualities (tail, light fur, claws). This current version is much more animalistic than previous versions. The transformation is about a page long. I don't have a scan of it, but here's the cover, to give you an idea.
The second is in the Image one-shot Belfry. It features multiple people-to-bat-vampire transformations. There are a bunch of nice little tfs throughout, with some nice focus on one or two female tfs (each is only a few panels long, and is more stylistic than detailed, but it's definitely worth a look).
Here's a scan I found on google:
It's not every day you see a nice female tf in mainstream comics, so it was a really nice surprise to see two of them in one week. What's more, both featured the characters in the nude, which is always a nice bonus.