For 35 Australian dollars (about 27 U.S. dollars), customers of Sydney-based Easy Being Green can offset a year's worth of carbon emissions linked to their dogs.
From National Geographic:
http://news.nationalgeographic.com/news/2007/03/070306-warming-credits.html
