It puzzles people that cats sleep so much, but not when their owners prefer – like in the early morning when they tend to wake up the house. And although many cats sleep a lot, each has individual preferences. It’s hard making general statements about cats and sleep because they all do their own thing.
by David Stone
for Assorted Ideas, Large & Small

It’s like there aren’t any rules.
Why do cats sleep so much in general, though?
The answer is that sleeping is an essential part of being a cat. People, too. Cats are crepuscular, meaning they are most active at dusk and dawn. In addition, cats have a thin coat of fur and need to conserve heat during the day when they’re sleeping.
Mostly, however, cats sleep heavily because their evolved prey does too; mice and birds take long naps in between meals and that’s the best time for catching them. However, their habit of sleeping in between activities actually works against them, making them more vulnerable to predators.
This is one reason why cats spend so much time grooming themselves: it’s a way to stay awake, pass the time and keep their coats shiny and healthy. More commonly, cats hide while sleeping. The practice evolved because it’s safer.

A cat’s sleep cycle is different than that of humans and many other mammals. While other mammals are usually in REM (rapid eye movement) sleep for short periods, cats spend most of their sleep time in slow-wave sleep. Slow-wave sleep is also known as phase three, the deepest state of non-REM sleep. It’s when they’re “catching up” on rest and conserving energy.
It isn’t unusual to see your cat sleeping more than usual—for example, if she’s just had surgery or is recovering from an illness. Like with humans, if your cat doesn’t get the rest she needs, her health suffers.
…try to enjoy her sleeping while you can…
The amount of sleep a cat needs varies somewhat by age and activity level—younger cats need more sleep than older ones because they’re growing, while active kittens often don’t sleep much at all. If your cat seems to sleep more than usual, one of the first things you should do is make sure there are no health problems.
But if your kitty does seem normal, try to enjoy her sleeping while you can—soon enough she’ll be wide awake and ready for playtime!
Additional notes: Cats’ personalities also affect their sleep patterns. For example, if you’ve ever had more than one cat, you may have noticed that even siblings tend to act very differently when they’re not chasing each other around. Some cats are loners who will sleep most of the day and only play at night; others are ready to go all night long.
If your cat is an early bird, you can use catnip to help keep him awake during playtime. If he’s more of a night owl, try a toy that will encourage him to pounce and chase at night—like a flashlight!
Conclusion:
Cats sleep a lot because it’s necessary to do so. Their sleep cycles are different from those of most other mammals and they need to conserve their energy when hunting. Their personalities also affect how much they sleep—some cats are early birds while others are night owls. Bottom line: they’re a lot like some people you know, with minds and habits distinctly their own and hard to change.
Buy me a coffee.
Thanks.
More from Assorted Ideas, Large & Small
- Camouflage or Catouflage? Ai Weiwei Artwork in Four Freedoms Inspired by Wildlife Freedom FoundationAi Weiwei’s installation “Camouflage” on Roosevelt Island features cat patterns, emphasizing how animals, unharmed by human crises, suffer the consequences of such events.
- Are Cats Smart? – The World’s Dumbest Question #103Are cats smart? Absolutely! They’ve mastered human enslavement without lifting a paw, proving they’re wizards of cunning and charm. Meanwhile, humans still can’t find their car keys.
- Esther Needs a Home. Yours May Need Esther. Adopt a Great, Loving Cat TodayEsther, a charming and playful two-year-old cat, seeks a loving home. She’s affectionate, people-friendly, and promises endless entertainment. Don’t miss out on this delightful companion.
- Don’t Let the Whiskers Fool You: The Feline Genius of Owning Your Home (Cat Edition)Cats are more than just cuddly companions. They strategically mark their territory, turning your home into their kingdom. From strategic scent marking to subtle manipulation tactics, they skillfully rule our lives. Embrace their feline Feng Shui and appreciate their unique perspective on living spaces. They may own your heart and the comfiest spot on the couch.
- Managing Feline Herpesvirus in Cats: Symptoms, Spread, and PreventionFeline herpesvirus (FHV-1), also known as feline viral rhinotracheitis (FVR), is a highly contagious upper respiratory infection in cats, causing symptoms like sneezing, coughing, and eye discharge. It spreads through direct contact and can stay dormant for life, but stress or illness can reactivate it. Vaccination and hygiene help prevent and manage the virus.
AVAC: Where the Pipe Curves
This is the final installment in my notes from the December 2nd, Operations Advisory Committee meeting, following “An Emergency, Apparently” and “Rust Is Funny Until It Isn’t”.










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