What role does vitamin D play in the health of cats and do cats need vitamin D supplementation in their diet?

Vitamin D is important for cats as it helps regulate calcium and phosphorus levels in their bodies, which are essential for bone health. Cats can produce vitamin D through sunlight exposure and from their diet, but supplementation may be necessary for indoor cats or those with specific health conditions. It is important to consult with a veterinarian before adding vitamin D supplements to a cat's diet to ensure proper dosage and avoid potential toxicity.