Who Made Dat Scat?

The other day Kim and I were walking to our building from the parking lot when I noticed this spoor. We knelt down and studied it, and then Kim took a photo.

If you look carefully at it, you'll see lots of wiry fur. My hypothesis is that it's from a gray fox (Urocyon cinereoargenteus). We've all seen them running in this vicinity (although I've said before I think they're red foxes; I vacillate about this), and foxes are omnivorous, enjoying meals of small rodents.

Kim thinks it's raccoon poop. But I can now say that I've done extensive research on animal droppings, and it seems that raccoons usually use one latrine spot for pooping, while foxes drop it on the run to mark territory. Fox poop is also said to have "a characteristic twist" (whatever that means), and I think this poop could fit that description.

I would have thought it would be much easier to find satisfactory photographs of animal waste on the Internet. I am disappointed in you, Internet.