Cat Sleep Patterns: How Long Do Cats Really Sleep?

Written by

Dr. Nenad Misura

Updated Date

May 30, 2025

12 minutes

How Many Hours Do Cats Sleep in a Day?

The duration of a cat’s sleep depends on its age. Here’s what you can expect:

Kittens: 18 to 20 Hours

Kittens are full of energy, but only when they’re awake. However, they’re out cold most of the time. Newborns and young kittens need a lot of sleep, especially since they’re growing and developing.

Young cats have about 18 to 20 hours of sleep a day. You’ll often see them wake up, eat, play for a few minutes, then head back to sleep once again. It’s part of their nature to have as much sleep as possible.

Adult Cats: 12 to 16 Hours

Once kittens become adults, or reach the age of one year, their sleep starts to lessen a bit. Adult cats tend to sleep for an average of 12 to 16 hours a day. This might sound like a lot, but for them, it’s completely normal.

Senior Cats: 16 to 20 Hours

Older cats tend to slow down. As they age, their energy levels drop, and their sleep can increase to more than 16 hours a day. It’s generally nothing to worry about since it’s a normal thing that comes with their age.

A Cat’s Sleep Patterns

Cats sleep differently from humans, with a different structure that suits their lifestyle. As natural-born predators, they have evolved to balance rest and the ability to display bursts of energy at a time.

Cats have a polyphasic sleep cycle. Unlike humans, who sleep in one long stretch, cats sleep in multiple periods throughout the day and night. Each catnap lasts for about 15 to 30 minutes.

During these naps, your cat is always half-alert, ears twitching, ready to wake up if they hear food hit the bowl.

They are also crepuscular, which means that they are primarily active during the twilight hours. This aligns with their natural hunting instincts when prey is most easily caught, and explains why cats are more active during the midday and nighttime hours.

What Affects How Many Hours Cats Sleep?

A lot of factors affect a cat’s sleep. These include:

Age

A cat’s age is the most defining factor that affects its sleep. Kittens and younger cats will need more sleep for development, while older cats need it because of their declining energy reserves. Adults need fewer hours because of their developed bodies and higher energy levels.

Activity Level

Highly active cats, especially those with regular outdoor activity, tend to sleep less than cats who don’t have regular exercise. If your cat loves to play, climb, and explore, then you can expect them to have fewer hours of sleep.

On the flip side, cats who don’t do much throughout their days will sleep more often, mainly out of boredom and lack of stimulation. So, if you want to spend more time with your cat, create ways to stimulate its mind and promote physical activity.

Environment

In conjunction with activity level, a cat’s environment also plays a role in how many hours it sleeps. Indoor life is predictable, safe, and follows a routine. Knowing this makes cats feel less stimulated. They love calm, familiar spaces when it’s time to nap and relax.

Cats who regularly spend time outdoors will be more energetic and sleep less because of the abundance of mental stimulation. All of the noise, moving objects, and people pique their curiosity.

Diet

A cat’s diet can affect their sleep. Cats with suboptimal diets may experience disrupted sleep. Diets with high starch content can mess with their sleep, resulting in blood sugar spikes that lead to an increase in stress hormones.

Conversely, diets that adhere to a cat’s natural diet, such as high-quality protein, can promote sleep and relaxation by releasing endorphins.

Additionally, overeating can disrupt a cat’s sleep. Eating too much can create abdominal discomfort and pain, which prevents them from sleeping comfortably.

Health

Sudden changes in your cat’s sleep schedule and duration can signal illness. This often accompanies other symptoms, such as weight loss and a reduced appetite. Painful and uncomfortable conditions, such as feline diabetes, arthritis, or liver disease, can disrupt a cat’s sleep.

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What are the Signs Your Cat Is Not Sleeping Well?

If your cat is not sleeping well, there will be some noticeable signs. These include:

Changes in Sleep Pattern. Cats who are sick or are experiencing issues will either have difficulty sleeping or sleep more than usual. They might have difficulty finding an optimal spot to rest.

Behavioral Changes. Changes in mood, such as irritability, aggression, or withdrawal, can be a sign of insufficient sleep. Affected cats will also be considerably tired and lethargic. Some will be considerably vocal and may show changes in interactions with people and animals.

Health-Related Signs. Cats affected by health issues will have disrupted sleep. These may include symptoms such as vomiting and diarrhea. They will also exhibit changes in grooming habits, such as overgrooming or a lack of grooming.

How to Help Your Cat Sleep Better

If your cat has trouble sleeping, it’s essential to take the steps to help them sleep better and healthier. Here are a few tips:

Create a Comfortable Environment

Cats love to sleep and rest in quiet, secure spots. Give your cat access to a soft bed, cozy blankets, or elevated platforms. If your home is too noisy, then move them to a quieter room where they can feel safe and relaxed.

Stick to a Routine

Routines are the core of a cat’s life. These help them feel safe since they know what to expect. Keep specific schedules for eating, playing, and other activities to help them have a consistent sleeping schedule. Consistency can help them regulate their sleep cycle and reduce stress.

Encourage Physical Activity

A bored cat will often sleep more due to the lack of stimulation. Make time for activities outside or inside. Use laser toys, puzzle feeders, interactive toys, or balls to get their minds thinking. Active cats tend to have more balanced sleep patterns and better overall health.

Improve Diet

Cats should eat good sources of high-quality protein for growth and development. This also helps them feel relaxed, which promotes good sleep and mental health. Also, make sure to provide balanced portions to avoid overfeeding.

Why a Cat’s Sleep Matters

A cat’s sleep is an essential part of its growth and overall health.

Supports cat growth. Sleep helps kittens grow by producing growth hormones, which are essential for physical development.

Conserves energy. Good, consistent sleep leads to balanced energy levels. This gives them more energy for physical activity and playtime.

Boosts brain function. Cats benefit mentally from sound sleep. Consistent sleep helps cats maintain their memory, brain health, and emotional well-being.

Strengthens the immune system. A lack of sleep can weaken the immune system. Cats who sleep well have reduced stress hormone levels and improved T cell function.

Improves mood. Balanced sleep helps avoid any unnecessary behaviors, such as irritability, restlessness, and aggression. It also helps reduce stress.

"Sleep is an essential part of a cat's life, helping them grow and stay active."
- Dr. Nenad Misura

Final Thoughts

Cats sleep an average of 12 to 16 hours a day. Kittens and seniors will require more sleep due to their specific physical needs. Keep an eye out for your cat’s sleep and provide everything they need to sleep peacefully and happily.