That was quite a strange game. It was strange in that I couldn't get past it. I had to look up the walkthrough. I was literally the first person to do that! Anyway, you have to dig under the tree and you'll see a rabbit down there. Go to the other end and the rabbit will bite your leash off.
Keep going to the right until you reach the sheep. Bark at the sheep until he goes into the pen. Close the door (and open) with the digging key. That's how you get one ending. I'm not interested in the other ones.