Your pet's carbon footprint is bigger than my SUV's?

According to authors, Robert and Brenda Vale, your pet dog leaves a footprint bigger than an SUV. Their book, Time to Eat the Dog? The Real Guide to Sustainable Living, lays out a good argument and raises some questions and maybe some dander. In a country where Green living is becoming politically correct, how far will people go to be "green"? Will this change how most view pet ownership? Should it?

You can read more about it in the New Scientist.