It is difficult for us to know what a cat is thinking. We can roughly infer it through some specific performances:

1. After the owner goes out, the cat stands by the window and keeps looking in his direction. Maybe he misses his master who is away from home and wonders how long it will take for him to come back.

2. The cat stands on a high place and stares into the distance, probably thinking about what the outside world is like.

3. If the cat keeps meowing and rubs against you when you come close to it, it may be thinking about when the owner can play with it, when people will feed it, etc.

4. Cats are really curious. They may be attracted to cockroaches and mouse locks, and they may wonder what they are.

5. Cats will feel very uncomfortable when they are sick, and may wonder if their owners can help or when they will get better.

Cats have their own thinking, so after the cat gets to know its owner, it will find and use the litter box after playing with the owner, changing the location of the litter box, and will ask the owner for food when it is hungry. It’s a sign that the cat has a mind of its own. Usually the owner can interact with the cat more, so that the owner can better understand the cat's thinking.