Horses and cows have much better-smelling poop than hogs do, and they generally won't eat human poop, rotting garbage, fallen soldiers on battlefields, or small

Horses and cows have much better-smelling poop than hogs do, and they generally won't eat human poop, rotting garbage, fallen soldiers on battlefields, or small children that happen to trip and fall. Hogs will eat all of these. https://en.wikipedia.org/wiki/Pig_toilet https://en.wikipedia.org/wiki/Pig_toilet We don't really know the origin of the taboo, but there are more candidate explanations than just epidemiology.