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.
Cats generally sleep between 12 and 16 hours a day. No two felines are exactly the same, however, and age and individual temperament can often influence how much shut-eye they receive. Apart from possums and bats, no other animals get more sleep than cats do.