[orion]

Originally Posted by Aphrah

It was in episode 13 (although that may be what you meant), somewhere near the end, Neko and Kuroh ran past the Blues in animal form.

Spoiler:

But that doesn't mean that their original forms are animals. Further back in the thread, it was stated that both are originally humans. It's apparently in the manga. The one animal strain in the manga couldn't turn into a human.