A cat rubbing its tail against its owner has the following meanings:

1. Like: In order to express that it likes you, a cat will rub you with its tail.

2. Acting coquettishly: It may be that the cat wants its owner to play with it, or it wants to find food for the owner, so it rubs the owner with its tail.

3. Physiological needs: For example, when a cat has an itchy area that is difficult to scratch, it may relieve it by rubbing it.

4. Leave a scent: It may be to leave your own scent on the owner. This is to make it easier to find you later, or to declare your sovereignty.