INCREDIBLE Quadroped Fur-Suit!!
I originally saw the link posted in chris_sawyer 's LJ, so Kudos to him for making me aware of it!
The costume was created by beastcub , and the journal entry itself is here: http://community.livejournal.com/fursuit/3892688.html
This is the video from the original posting - absolutely amazing! It's wonderful to see that there is that kind of talent out there!
Click to viewA video of one of her earlier quad-horse projects can be found here: http://www.youtube.com/watch?v=mgc0i-wqpnE From there, there are links to other videos of costumes she has created.