I'm afraid I can't be of much help (can't make anything in Blender to save my life), but I'll be stalking this thread. I had been thinking about a game like this, like FeralHeart, but more realistic and with more species models. I'm especially intrigued by the proposed 'horse models. So far, an animal-themed MMORPG akin to FeralHeart or Impressive Title with HORSE MODELS does not exist.
And maybe, to keep folks from screaming "COPYRIGHT!!!" you could change the name to WildSoul, so that it basically means the same thing...but it's just different enough to keep you guys in the safe zone.
So, anywho, I'm keeping my eye on this. Ta-ta. *fades into the shadows*