Reasons for two cats fighting:

1. If you see two cats fighting together, they may not really be fighting, but just messing around and playing games. .
2. Cats have a strong sense of territory. If two cats are kept in a household, they may fight for territory.
3. If two cats have discordant personalities, don’t like each other, and dislike each other, they will fight.
4. If cats are worried that other cats will share their food, they will also fight for food. The owner should prepare enough food and distribute it evenly between the two cats.
5. If a cat is in estrus, especially a male cat, its personality will become very irritable and it is easy to conflict with other cats.