However they can sleep as much as 20 hours within a 24-hour period. Keep Your Cat Safe. Why Do Cats Sleep So Much Discover Amazing Facts Cat Sleeping Cat Behavior Cat Care Tips In fact 35 percent of American adults routinely do not get enough sleep clocking in less than seven hours of rest per night according to the Centers for Disease Control and Prevention CDCAlthough powering through the day on far too little sleep is the reality for millions of Americans it works. . In general cats do the majority of their sleeping during the day since they are most active overnight. Vet Articles Latest Vet Answers The latest veterinarians answers to. Some kids might need more and some need less. That makes it safe to say that cats do in fact remember their previous owners. Are Cicadas Poisonous to Cats. Getting Them on a Routine. As they get older you can factor in some play time. The amount of sleep a person needs de...