WattzOn is a super simple website designed to help you track your energy and carbon footprint. Enter in the square footage of your apartment/home, any appliances (fridge, toaster, dishwasher (I wish)), your lifestyle (flights, car situation, food choices), synch up with your utility bills, and then it calculates what you’re looking at as far as planet-impact goes. It’ll also show you how you compare to the ‘average American home’ so you get a real grasp on what your choices mean. It offers areas for improvement, including $ saving tips (especially if you own/are ok with putting upgrades in).
Here’s our apartment’s actual use. We have pretty inefficient electric baseboard heat (which is also wildly expensive) but try hard not to turn it on. I’ve invested instead in slippers, flannel PJs, and am considering a snuggy. Due to our thrifty eco-minded attempts, we’re a bit lower than the average home our size, do not have a driving footprint, and are also very low on food due to not eating meat. Of course we completely blow it in the travel department however with our cross-country flights. Can’t wait til planes can run on bio-fuel!
Enter your stats and see where you line up!
Guder Goes Green 
I would be very scared to try this! I know our pets are a big contributor to our carbon footprint as well but it’s too late now! We use a woodburning stove all winter and a few electric heaters, closing off rooms we don’t use completely. investing in really good blinds and heavy drapes has made a world of difference in our energy bills [and resealing the windows].