Cats can sleep for about 6 hours at night. Because cats like to be active at night and will not sleep all the time, they may sleep for a few hours and then play for a while before going back to sleep. Normal cats can sleep a total of 16 to 20 hours a day, but they do not sleep together, but sleep separately, and each sleep is not a deep sleep. Only about 4 hours are deep sleep, and the rest of the time is light sleep. .