Really unique concept and great execution! I really like games that have a fun core mechanic and progressively build up on it; this game is a great example of that.
vvv SPOILERS vvv
My only complain really is that the wolves don't KO long enough. By the time you stomp the sheep, the wolf is already back up and kills the sheep :( . The only way I managed to get around them is by hoping their path finding breaks long enough for me to get the sheep across.
That's why I had to stop at this level. I hope I didn't miss on anything, and if I did I hope I'll get to see it at the show off!