I love goats. We did have one as a lawnmower when we lived in South Wales. He was a castrated billy that would otherwise have gone for meat, but he had a wonderfully amiable personality and did indeed eat things that the ponies wouldn't touch.
Every so often I look at the overgrown grass in our garden and think that something could be eating it. I also keep looking longingly at the herd of pygmy goats in the college's small animal care unit and wondering if they have any to spare...