Vitamin D
Dogs are unable to synthesize vitamin D in their skin with sunlight so they are dependent on dietary sources to meet their vitamin D requirement. To little or too much can cause serious problems.
Vitamin D in dogs and cats
More Recalls of Toxic Pet Food, Is Your Brand Implicated?
Toxic Levels of This Nutrient Is Shockingly Common in Pets - And Potentially Fatal
Mars Petcare UK recalls products for potential elevated levels of vitamin D
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