Cats that have access to the outdoors, have higher energy and nutritional requirements because of the size of their territories and the variations in weather conditions to which they are exposed. Their physical expenditure depends on the frequency and length of their excursions into the outside world. They are subject to seasonal changes and can be confronted with situations having adverse effects on health. Health nutrition can help them to better protect themselves in a sometimes hostile environment and help strengthen their natural defenses. The right combination of nutrients in the correct amounts, widely studied for their effect, can you help you cat achieve it’s best health.