Why did dog shit used to turn white but now it doesn't anymore

The decline of white dog poop is primarily attributed to changes in dog diets. In the past, dog food often contained high levels of calcium from meat and bone meal, leading to white, crumbly feces as moisture evaporated. Nowadays, formulations have shifted to provide balanced nutrition without excessive calcium, resulting in less white poop[2][6][8]. Additionally, improved pet care practices mean dog owners are more likely to clean up immediately, preventing feces from drying out and turning white[4][6].

Citations:

[1] [PDF] THE SCOOP ON YOUR DOG'S POOP - HubSpot https://cdn2.hubspot.net/hubfs/532826/PDFs/Poop-Color-Chart.pdf

[2] Why you don't see white dog poo like you used to - Community - LADbible https://www.ladbible.com/community/white-dog-poo-change-colour-983047-20230211

[3] Should you be worried if your dog's stool changes color? - FirstVet https://firstvet.com/us/articles/should-you-be-worried-if-your-dogs-stool-changes-color

[4] What Does White Dog Poop Mean? - Petcube https://petcube.com/blog/white-dog-poop/

[5] Dog Poop Color Chart | What's Normal? - Pet Drugs Online https://www.petdrugsonline.co.uk/pet-advice/dog-poo-colour-guide

[6] What Happened to the White Dog Poop That Used to Be Everywhere? https://www.mentalfloss.com/article/643437/what-happened-white-dog-poop-used-be-everywhere

[7] Dog Poop Color Chart and What It Can Tell You About Your Dog https://puppypoop.com/dog-poop-chart/dog-poop-color-chart/

[8] Why Was White Dog Poop So Common Before The 90s? https://www.iflscience.com/why-was-white-dog-poop-so-common-before-the-90s-66581

[9] Dog Poop Chart: What Color Should Healthy or Unhealthy Poop Be? https://www.rover.com/blog/dog-poop-chart/