Cats need to supplement taurine because their body structure prevents them from obtaining essential nutrients from plants. For example, taurine, which is necessary for cats and cannot be synthesized by themselves, needs to be obtained from beef, mutton, and fish. It is obtained from meats such as chicken and chicken. If it is lacking, it can cause visual impairment and heart disease.

Because the body structure of cats makes it impossible for them to obtain necessary nutrients from plants. For example, taurine, which is necessary for cats and cannot be synthesized by themselves, needs to be obtained from beef, mutton, fish, chicken and other meats. However, excessive taurine deficiency can lead to visual impairment and heart disease in cats.

Fat is also an important nutrient needed by cats. Compared with protein and carbohydrates, cats require a lower fat content, only 20%. OMEGA-3 (ω-3/Ω-3) and OMEGA-6 (ω-6/Ω-6) in fat are very helpful for cats with enteritis and dermatitis. In addition, fat also plays an important role in the intake of some fat-soluble vitamins. Cat's food contains a moderate amount of fat, which can improve the palatability of the food, but excessive fat can easily lead to obesity in cats.

In addition to protein, carbohydrates, and fats, vitamins and minerals are also indispensable nutrients for cats. Most vitamins can be obtained through food or synthesized by themselves. There are also some vitamins that cats cannot synthesize, such as vitamin A and vitamin D, which can only be ingested through food. Minerals are important elements needed for cat growth and play an important role in cat bone development and tooth growth.

In some high-quality cat food, various vitamins and minerals have been added, and they are all set according to the amount required by the cat. In daily life, cats eating high-quality cat food do not need to add additional nutrients, but sick cats or frail elderly cats need to supplement vitamins according to actual needs. For example, cats suffering from cataracts can be supplemented with vitamin B, while cats suffering from liver disease or anorexia need to be supplemented with vitamin E and vitamin K.