Vitamins play diverse roles in a dog's body, supporting functions ranging from immune response to skin and coat health. For instance, Vitamin A is crucial for maintaining healthy eyesight, while Vitamin D aids in calcium absorption, essential for bone health. Vitamin E functions as an antioxidant, protecting cells from damage, and B vitamins are involved in energy metabolism and maintaining a healthy nervous system. In a homemade diet, it can be challenging to provide these vitamins in the required proportions, especially if dogs are not consuming a wide variety of foods.
