The phenomenon of white dog feces, which was more commonly seen in the past, has largely disappeared due to changes in dog diets and pet care practices. Here are a few reasons why:
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Diet Changes: In the past, many commercial dog foods contained higher amounts of bone meal and calcium. When dogs consumed these foods, their feces would often turn white as they dried out because of the high mineral content. Modern dog foods have more balanced formulations with less bone meal and different sources of protein and nutrients.
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Improved Pet Care: Nowadays, pet owners are generally more diligent about picking up after their dogs. This means that feces don't sit around long enough to dry out and turn white.
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Environmental Factors: The environment plays a role too; exposure to sunlight can bleach feces over time, but if waste is promptly removed by responsible pet owners or city services, it doesn't get the chance to undergo this process.
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Healthier Diets: Many dogs today are fed higher-quality diets that are better suited to their nutritional needs, which results in healthier digestion and less mineral-heavy waste.
So essentially, it's a combination of improved dog nutrition and better waste management practices that have led to the disappearance of white dog poop from our streets and yards.