Vitamin D Nutrition Facts:
While dogs have been domesticated for thousands of years it is only recently we have confined them to a daily regimen of commercial dog food. Vitamin D, which is not produced by sunlight in dogs, was historically obtained from eating the fat stores of killed prey.
In a recent study, more than 75% of all dogs were classified as insufficient. Given the importance that 25vitD has on health status, dogs should be evaluated and supplemented if needed.