Quick answer: Most adult cats sleep about 12 to 16 hours a day, kittens up to about 20, and seniors often a bit more. That is normal, but a sudden change in your cat’s sleep, especially with less appetite, less interest in favorite things, or other symptoms, is worth a call to your vet.
If it feels like your cat spends most of the day asleep, you are not imagining it. Cats are some of the sleepiest animals in the house, and that is usually completely normal. But sleep is also one of the first things that changes when a cat is bored, stressed, in pain or unwell. This guide answers how many hours cats sleep at each life stage, why they sleep so much, how winter changes the picture, and the signs that mean it’s time to call the vet.
How many hours do cats sleep a day?
Most adult cats sleep about 12 to 16 hours a day. That range is cited by both PetMD and VCA Animal Hospitals. For comparison, VCA notes that the average adult person sleeps 7 to 9 hours. PetMD adds that kittens may sleep up to 20 hours a day, and that senior cats often sleep more than younger adults because they are less active.
| Life stage | Typical sleep (per PetMD) | What’s going on |
|---|---|---|
| Kittens | Up to about 20 hours a day | Rapid growth and development; short, intense bursts of play between naps |
| Adult cats | About 12–16 hours a day | Frequent naps through the day, most active around dawn and dusk |
| Senior cats (10+ years) | Often more than younger adults | Lower activity; may also reflect health issues or reduced mobility |
These are averages, not targets. Breed, diet, lifestyle and personality all influence how much an individual cat sleeps. VCA points out that there is too much day-to-day variation to judge health by counting hours alone. What matters more is whether your cat’s pattern has changed.
Why do cats sleep so much?
They are built to conserve energy
Cats are predators. Hunting, stalking and pouncing take short bursts of intense energy, and PetMD explains that cats rest a lot so they are ready for those bursts. Even well-fed indoor cats keep this rhythm.
They take lots of catnaps
Rather than one long sleep, cats tend to take frequent naps. PetMD describes catnaps lasting roughly 15 to 30 minutes, which let cats rest while staying able to react quickly. That is why a “sleeping” cat can be on its feet the instant a treat bag rustles.
They are most active at dawn and dusk
Cats are crepuscular, meaning they are naturally most active around dawn and dusk. A cat who seems to sleep all day may be busy while you are asleep, and the early-morning wake-up call is part of the same pattern.
Boredom
PetMD notes that cats without enough mental stimulation can become lethargic and sleep more simply to fill the time. Boredom can also show up as destructive behavior, over-grooming or constant meowing.
Do cats sleep more in winter?
Many owners notice their cats napping longer once the days get shorter. The PDSA, a UK veterinary charity, says pets may prefer to nap a little longer as mornings and evenings get darker, possibly due to a deep instinct to conserve energy over colder months. The PDSA also notes that cats who usually go outside may choose to stay in more in winter, and recommends scheduling extra playtime so they don’t get bored.
Cold weather can also make stiff joints feel worse, according to the PDSA, so an older cat sleeping more in winter may partly be avoiding uncomfortable movement. More on that below.
If your cat’s favorite winter nap spots are cold floors or drafty windows, give them warmer options. A soft Teddy Fleece Cat Pad on a sunny chair, or an enclosed den like our Pop-Up Portable Cat Play Tent, gives your cat a cozy place to sleep that is clearly theirs.
Is my cat sleeping too much?
Instead of counting hours, VCA suggests asking a few questions:
- Is this my cat’s usual routine? A change in a regular sleep schedule may signal a problem.
- Does my cat still wake up for favorite things, like a visitor at the door, the treat bag or the can opener?
- Is my cat skipping meals or play to sleep?
- Is my cat alert and bright when awake, rather than groggy or listless?
- Are there other symptoms, such as vomiting, coughing or hair loss?
If the answers point to a change, talk to your veterinarian. PetMD lists several conditions that can make cats sleep more than usual, including hyperthyroidism, diabetes, kidney disease, heart disease, liver disease and cancer, and advises seeing the vet promptly if increased sleep comes with loss of appetite or weight loss.
Pain and arthritis
Joint pain is a common, easily missed reason older cats sleep more. VCA lists reluctance to jump, stiffness and reluctance to play among the signs of arthritis. If your senior cat sleeps more and jumps less, read our guide to the signs of arthritis in cats and mention it to your vet.
Stress
PetMD notes that cats may change their sleep patterns when they are stressed or anxious, for example after a new family member arrives or feeding times change. Our guide to signs of stress in cats covers other clues to look for.
What if my cat sleeps too little or is up all night?
Restlessness at night is often about the crepuscular rhythm plus too little activity during the day. PetMD suggests making sure your cat has things to do while you sleep, such as a scratching post or a window to look out of. Sudden restlessness, especially in an older cat, can also have medical causes, so mention it to your vet if it is new.
How to help your cat sleep well (and stay active)
- Offer several comfortable beds in quiet, warm, draft-free spots, including at least one raised or enclosed option.
- Play before bedtime. A 10–15 minute play session that ends with a “catch” and a small meal can help your cat settle at night.
- Add vertical space and scratching. PetMD recommends vertical territory, scratching posts and cat shelves to prevent boredom. A Cat Side Table with Scratcher beside the sofa gives your cat a perch, a nap spot and a scratching surface in one piece of furniture.
- Use puzzle feeders to turn meals into an activity.
- Keep a steady routine for meals and play, which helps reduce stress.
- Watch for changes and keep notes or short videos to share with your vet.
For more boredom-busting ideas, see our list of indoor cat enrichment ideas.
Give your cat a cozier place to nap
Our soft, washable Teddy Fleece Cat Pad turns any chair, shelf or hideaway into a warm sleep spot. Free US shipping on orders over $99.
Frequently asked questions
Is it normal for my cat to sleep 18 hours a day?
Kittens can sleep up to about 20 hours and seniors often sleep more than younger adults. For a healthy adult, 18 hours is above the typical 12–16 range, so watch for other changes and ask your vet if it is new.
Why does my cat sleep all day and stay awake at night?
Cats are crepuscular, most active around dawn and dusk. More daytime play and activities for the night, like a scratching post or a window view, can help.
Do cats sleep more in winter?
Many do. The PDSA notes that pets may nap longer as days get darker and colder, likely to conserve energy. Keep up daily play so they stay active.
Do older cats sleep more?
Yes. PetMD says senior cats often sleep more because they are less active, sometimes due to health issues or reduced mobility such as arthritis.
When should I worry about my cat sleeping too much?
Call your vet if your cat’s sleep pattern changes suddenly, if they skip meals or favorite activities, seem groggy when awake, or have other symptoms like vomiting, weight loss or coughing.
Keep reading
Sources
- PetMD – Why do cats sleep so much?
- VCA – Is your pet sleeping too much?
- PDSA – Does the change in seasons affect pets?
- VCA – Arthritis in cats
This article is general information, not veterinary advice. If you are worried about your cat’s health, contact your veterinarian.
