Treehugger.com is a fun website to check out just for some fun and informative articles about the environment and living more sustainably.
This article is one of the more ridiculous ones but hey its true. Rent-a-Ruminant is an actual company from which you can rent goats to cut grass or clear brush.
Here is the article.
And here is a site to see if there are goats available for landscape near you.
