Cats lie down frequently for the following reasons: First, cats have a long sleep requirement, about 16 hours a day. Therefore, cats lie down frequently because they want to sleep; second, cats are sick and show signs of mental illness. If symptoms of lethargy and lethargy occur, it is recommended that the owner take the cat to the hospital for examination in time; third, the cat has a relatively lazy personality. In this case, the pet owner can use some toys to let the cat move for a while.