Choosing cat food for senior cats differs from choosing food for other stages of life, especially regarding the content of certain nutrients. We know that cats love foods high in protein, and high protein content is beneficial for maintaining overall health and strengthening immunity. So, does this mean that the higher the protein content of cat food, the better for senior cats? 
While high-protein foods provide more energy, not all high-protein foods are suitable for senior cats. Milk is one such example; senior cats are prone to diarrhea after drinking milk, which can lead to dehydration and even death in severe cases. For cats with kidney problems, high-protein foods should be avoided altogether; low-protein foods are the best choice.
Furthermore, due to the decline in gastrointestinal motility, older cats are better suited to soft, easily digestible food. Fish meat with bones removed is an excellent choice for three reasons: First, older cats love the taste of fish; second, fish is easy to digest, low in fat, and will not put too much burden on the stomach and intestines; and third, fish can also meet the cat's protein needs.
In addition, as their activity level gradually decreases, cats no longer need as much energy, and they are likely to experience a decrease in appetite. Owners should not worry too much, as this is a normal phenomenon.
