British Shorthair cat care instructions:
1. Cats have very delicate digestive systems, so they should be fed easily digestible food. More exercise can improve the digestive and absorptive capacity of the intestines, as well as the filtration and detoxification of the kidneys. It is also important to supplement the cat with calcium, iron, vitamins and other trace elements to ensure that the cat's nutrition is comprehensive. Clean and plenty of fresh water should always be provided for the cat.
2. Brushing teeth: Brushing your cat's teeth can ensure their dental health and reduce gum inflammation and odor.
3. Eye care: You can use a damp cotton ball to wipe the cat's eyes to clean its tear ducts and eye secretions.
4. Ear care, regular check-ups of the inner ear canal.
5. Joint care: Gently massage your cat's muscles and move its limb joints to reduce joint pain. 
Recommended diet for British Shorthair cats:
1. If your cat is thin, you can choose cat food that is higher in fat and protein. If your cat is overweight, you can choose cat food that is more plant-based.
2. Cats are carnivores and enjoy eating both meat and fish. However, a diet consisting solely of these foods can lead to calcium deficiency, so it's important to supplement their diet with calcium. Furthermore, feeding cats only meat and fish can put stress on their digestive system.
3. Cat food should contain nutrients such as vitamins, calcium, and protein. It should be cooked in a light and simple way. Cats' diets are different from humans', and we cannot feed them our own preferences.
