Normally, cat food is composed of ingredients such as proteins, carbohydrates, water, fats, minerals and vitamins. These are the things that bring up a healthy cat food for your cats. Protein should always be present in a cat food. It may be an animal-based protein or plant-based protein. Carbohydrates is also essential to provide cats an energy source and at the same time, a means of release of glucose from protein. Fats help in absorption of fat-soluble vitamins and give important fatty acids such as omega-3 fatty acids and omega-6 fatty acids. And for a better nutrition, cat also need vitamins like vitamins A, B, and D as well as minerals such as phosphorus and calcium.