These problems in cats indicate that they are getting old.
1. The hair begins to become rough and loses its shine, and the shedding will become increasingly worse.
2. It will have fewer and fewer teeth, and the teeth will not be as sharp as when it was young, making it difficult to bite things.
3. If a dog sleeps in late every day, it doesn't mean it's lazy. It just means its bodily functions are declining, its mobility is getting worse, and it's not as lively as before.
4. If a cat is not very interested in delicious cat food, it is because its digestive function and sense of smell have declined, which leads to a loss of appetite.
5. It often forgets where it urinated because its memory is gradually deteriorating. 
How to care for an old cat
1. Change your cat's food, choosing cat food with a higher protein content whenever possible. However, you should also pay attention to controlling the amount of food you feed them daily.
2. Play games with your cat more often, and give it more affection and care.
3. Regularly groom your cat's fur, brush it, trim its nails, and clean its eyes, ears, mouth, and nose.
4. Older cats don't like to jump as much, so reduce the height between objects to make it easier for them.
5. Weigh your cat regularly. If you notice significant weight fluctuations, take your cat to the vet for a checkup as soon as possible.
6. Observe your cat's condition closely. If you find any abnormal hair loss or unusual behavior, you should take your cat to the vet for a check-up.
