A visibly healthy skin and coat is considered to be an indication of the overall health of a dog. A dog's skin and coat serve key functions such as regulation of body temperature and hydration, and storage of several nutrients. As with humans, a dog's skin is its largest organ, and—in conjunction with its coat—acts as a protective barrier from the external environment. Skin and coat problems, such as flakiness and dullness, are often the first indication of a health issue. Conditions which can negatively affect skin and coat quality include nutritional deficiencies or a poor-quality diet. This is why the PEDIGREE Dry Recipes have been formulated to meet the Four Universal Needs of Dogs, which includes Skin & Coat. PEDIGREE Video: The Four Universal Needs of Dogs