It brought to mind abandoned animals. The dogs poor people took out to the countryside to dump, hoping household pets could fend for themselves. Starved a few days, those lap dogs and pedigreed mutts always resort to eating the shit of other animals. That shit, laced with the eggs of black flies, eggs ready to hatch out worms. The result being a dumped animal starves all the faster, eating more shit, hatching more mouths to feed, and finally finding a bush, a tree, a fence, but shade enough where a poor animal can collapse, panting, and die.