If you are trying to be “green” then you better not own a dog. Just sayin. Hard to take all of the preachy moralizing seriously otherwise. Here’s a fun research question. Compare the environmental impacts of household dog ownership with hydraulic fracturing rocks to release organic, naturally occurring methane. And if, as you correctly want to argue, “well, we get pleasure from dogs” then you’ve got some ‘splainin’ to do.