Why cats like cardboard boxes:
1. Cats like cardboard boxes because they have a natural inclination to prefer narrow, dark spaces.
2. Cats feel safer in cardboard boxes. Many cats are frightened by exposed or overly large spaces, while the space in a cardboard box is just right for them, providing a sense of security. This is why cats would rather sleep in a cardboard box than in a luxurious cat bed.
3. The cat thinks the cardboard box is warm in winter and cool in summer.
4. Cats in crates adapt to new environments faster and overcome anxiety sooner than cats without crates. They also tend to be more affectionate and interact with humans. 
5. Simply playing. A cat chewing on a cardboard box might simply be playing. Some kittens are quite mischievous and can play with a piece of tissue or a crumpled piece of paper for a long time.
6. Attracted by the smell. Cats may tear up and eat cardboard boxes because they like the smell. If the cardboard box was used to store food, it may have picked up some of the food's smell.
7. Feeling anxious. Some cats may tear up cardboard boxes to vent their anxiety, stress, or boredom.
8. Teething period. If the kitten is a few months old, it may be chewing on the cardboard box because it is teething and its teeth are itchy and uncomfortable, so it chews on the cardboard box to relieve the discomfort.
9. Pica. If a cat chews on a cardboard box and then tries to eat it, it may have pica. Pica in cats is usually caused by a lack of trace elements, fiber, minerals, and other nutrients.
The benefits of cats liking cardboard boxes:
1. For a soft cat bed, a cardboard box is not only a place to sleep, but also a place to sharpen claws, adding an extra function. Moreover, cats won't get angry if they use a box to sharpen their claws, it feels good, and cardboard boxes don't have any odor, making it a favorite for cats.
2. Cardboard boxes can keep things warm in winter and cool in summer. They are especially comfortable for cats in winter, and kittens know how to enjoy themselves.
3. Cardboard boxes are affordable and fun, making them the best choice for pet owners.
