The difference between Republicans and a pile of dog shit is

[Myrddin]

8. OK, couldn't resist a Google search

https://www.mentalfloss.com/article/643437/what-happened-white-dog-poop-used-be-everywhere

According to Treehugger, the culprit behind the white dog waste of the past was a surplus in calcium. Dog food used to contain an overabundance of meat and bone meal, both of which are high in the mineral. Whatever the dog couldn't process ended up in its feces, and as the wet matter dried out in the sun, the hard calcium stuck around. This led to crumbly, mummified turds littering our sidewalks and green spaces.

Today, commercial pet food brands are less likely to rely on bone meal for cheap filler. They've added more fiber to their products and lowered the calcium content. The result is healthier, more-naturally looking waste from the general dog population.