The reasons why cats are always active at night:
1. Cats are nocturnal animals and have the habit of staying up during the day and coming out at night, so they like to be active at night.
2. When a cat is hungry at night, it will also get up at night to look for food, or remind its owner to feed itself.
3. When cats are in estrus, they often get up at night to howl or mate.
4. The owner is not at home during the day, and the cat will keep sleeping during the day without anyone accompanying him, causing it to become more excited and active at night.
5. Cats’ hearing is very sensitive. When they hear sounds, they will be very alert and get up to check.

6. Cats like to catch mice, and mice are generally active at night, so cats will be more excited at night.

7. Cats will also run around at night when they come to a new environment, because cats have a strong sense of territory and want to have their scent in every corner of the room.