1

Eneus is a demon. Canon is that she's a Barghest, and that means she's a doggie. She even refers to herself as a doggie once.

But the tail they've drawn is a cat's tail. No dog has a tail like that. So I consider her a catgirl no matter what they say.

2

I really should have included Lisanna.

3 I've not seen most of these shows. :-(

4

Eneus is from Macademi Wasshoi.

The Liese twins are from the Nanoha A's TV series. (They were cut from the story for the Nanoha A's movie.)

Xiao Mei is from Shining Hearts.

Lisanna is from Fairy Tail. She's a shape-changer and that's one of her transforms. (She's the younger sister of Elfman and Mirajane, who are also shapechangers.)

5 That makes Eneus the only supernatural entity (angel, demon, spirit, youkai, kami, whatever) in all these posts, yes?  Everyone else is a human catgirled by magic, a human catgirled by technology, a cat anthropomorphized by magic, or a member of a naturally-occuring race of cat-people.

6 I could have included Himari, but didn't want to hunt for a suitable image of her. She's a demon. (from Omamori Himari)