Your relationship to the person on whom you are spying matters. If that person is your child or your employee, you have a lot more leeway when it comes to monitoring their activities. If you think someone is spying on you illegally, file a report with local law enforcement so they can investigate your case.
Most cats snooze around 16 hours per day. The majority of their sleep time, however, is much shorter than the typical seven hours or so that humans average at. night. Cats tend to sleep lightly, without going into a deep sleep.
A healthy, full grown cat should sleep about 14-16 hours a day. A full grown cat with an illness usually sleeps about 18 hours. Almost all kittens sleep about 17-20 hours a day. Newborn kittens are the ones who sleep for 23 hours a day. My cat sleeps about 15 hours a day. He is 11 years old, fat, and extremely happy and healthy.