Well, well, well. Two poop-to-power posts in one day. Lucky you! This time, instead of cows, we are talking dogs. I have three of them myself, and I can tell you just how horrible of a chore it is to clean up after two dobermans and a chihuahua. Yes, two dobermans and a chihuahua - no, she is not a chew toy.
You’ve debated getting an E85 FFV and read up on what it would take to convert that old diesel into a SVO vehicle, but have you every considered scooping chicken poop into your car? Harold Bate did, in the 1970s, and there’s quite a few good Internet resources telling his tale. One is at Journey to Forever, and it starts with the text of an article from Britain’s the Enquirer newspaper. Apparently, there is also a movie about Bate, but it's difficult to find.