DurocShark
Member
Combine the land required to generate its food and a "medium" sized dog has an annual footprint of 0.84 hectares (2.07 acres) -- around twice the 0.41 hectares required by a 4x4 driving 10,000 kilometres (6,200 miles) a year, including energy to build the car.
http://news.yahoo.com/s/afp/20091220/sc_afp/lifestyleclimatewarminganimalsfood