If you can't find any dog crap, you can crap in the bag yourself. I've done it before and it's not that hard. The best way is to sit on a toilet normally and stretch paper out pinned between the toilet seat and the toilet rim and crap on that, then wrap the crap in the paper and drop it in the bag. Douse it in lighter fluid, set it on fire, and you're set.

Godspeed.

- N