Just give Penny a small hill and she is all set.YouTube
Penny, our new dog, like to chase her ball. But she doesn't need us to do it. There is a field in front of our home that has a couple small hills. She'll carry the ball up a hill and drop it, then chase after it, and do it again. If she drops the ball and it doesn't roll, she'll nudge it a bit to get it going.