The most important nutrient for cats is taurine. Taurine helps to support a healthy heart, vision, and reproductive system in cats. Taurine aids in the digestion of fats and fat-soluble vitamins, aiding in proper absorption. Additionally, it has been linked to promoting neurological development as well as improving overall immunity against diseases. Without adequate amounts of taurine in their diet, cats can suffer from poor growth or even blindness due to lack of this vital nutrient. Therefore, it is important that cat owners ensure they are providing enough taurine through high quality cat food or supplements on a regular basis for optimal health and wellbeing of their feline friends.