The reasons why cats like to crawl into boxes:

1. When a cat feels scared in a new environment, it will hide in a dark and small place. Make it feel safe.
2. If the temperature is too low, cats will also like to get into the box to protect themselves from the cold.

3. If the cat is in a bad mood, he will also hide in the box to regulate his mood and relieve stress.
4. Cats are very curious and want to see what is in the box, so they will get in and check.
5. When cats feel bored, they will also get into the box to pass the time and find fun.