EZ first place (2000 points), but there seems to be a cap on how many sheep you can get into the pen (3-4 sheep). Here's why:
There is that one sheep (THE sheep) that stands in a corner of the map and every time a wolf spawns - it goes towards that one sheep. When you move any sheep away from its spawning location - another one spawns at that exact same location, and in the case of THE sheep - the new one replaces the role of wolf attractor. And over time wolves spawn more frequently, meaning that no matter what you do - at a certain point you will only be able to scare wolves away from THE sheep with no time to get it to the pen.
BUT, there is still one thing you can do to get an infinite score:
Overall nice game, I spent in it more time than I am willing to admit.🙂