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Cats are known for their sleeping habits. They spend a significant part of their day sleeping and resting. But how much sleep is normal for a cat? Should you be concerned if your cat sleeps a lot? In this blog post, we will delve into the sleep behavior of cats and provide you with some helpful information to better understand why your cat sleeps so much and if there is cause for concern.

Sleep Behavior of Cats

Cats are natural hunters, and their wild ancestors had to expend a lot of energy to hunt and catch prey. This instinctive behavior has been preserved in domestic cats, even though they no longer have to hunt to obtain their food. Therefore, it’s normal for cats to sleep a lot to conserve energy. 

Adult cats typically sleep 12-16 hours a day, while kittens can sleep up to 20 hours. During sleep, a cat goes through various sleep stages, including light sleep, deep sleep, and REM sleep. Light sleep allows the cat to respond to environmental noises and potential threats. Deep sleep is important for physical recovery and regeneration. During REM sleep, cats often exhibit twitching movements or claw motions, suggesting that they are dreaming. 

Sleep is crucial for cats as it helps them maintain their physical and mental health

Tabby little cat sleeping comfortably on the sofa
Image: KAVOWO –

Why Does My Cat Sleep So Much?

There are various reasons why cats sleep a lot. First, they need plenty of rest to replenish their energy reserves. Cats are naturally energetic and active, so it’s important that they sleep enough to recharge their batteries. 

Another factor influencing cats’ sleep behavior is their natural tendency towards nighttime activity. Cats are known to be more active at night and sleep more during the day. This behavior comes from their wild ancestors, who used to hunt at dusk and night. Even domestic cats often retain this behavior, meaning they sleep more during the day to prepare for their nocturnal adventures. 

Furthermore, stress, boredom, or a lack of mental and physical stimulation can cause cats to sleep more. If a cat is uncomfortable or finds itself in a dull environment, this can affect its sleeping behavior. It is essential to ensure that cats have enough mental and physical activities to keep them healthy and stimulated. 

However, it is important to note that abnormal sleep behavior in cats can also signal health problems. If a cat suddenly sleeps much more than usual, appears strongly apathetic, or shows other changes in behavior, this may be a sign of an underlying illness. In such cases, it is advisable to consult a veterinarian to have a thorough examination and diagnosis carried out. 

Observing your cat’s sleep behavior is important to detect anomalies early and respond appropriately. Cats are individual and can vary in their sleeping habits, but if you are concerned or notice unusual changes, it is best to seek professional advice to ensure your cat’s health and well-being

Should I Be Worried?

Although a lot of sleep is normal in cats, there are some signs to look out for to determine if your cat may have health issues. Changes in sleep behavior can be a sign of underlying illnesses. If your cat suddenly changes its regular sleep pattern and either sleeps significantly more or less than usual, this may indicate a health disorder. 

It is important to also observe other symptoms that may occur in conjunction with changed sleep behavior. Loss of appetite, weight loss, behavioral changes, or issues with urination are further signs that should raise concern. If you notice such symptoms in your cat, it is advisable to see a veterinarian to obtain an accurate diagnosis. 

Black cat is tired
Image: mariya_m –

There are various conditions that can affect cats’ sleep behavior. These include hormonal disorders like hyperthyroidism or diabetes, which can influence energy levels and sleep-wake rhythms. Heart problems, kidney diseases, or pain from arthritis can also affect sleep behavior. Some infectious diseases, such as FIV (Feline Immunodeficiency Virus) or FIP (Feline Infectious Peritonitis), can also lead to changes in sleep behavior. 

An accurate diagnosis by a veterinarian is crucial to identify the cause of your cat’s changed sleep behavior. The vet will carry out a thorough examination, possibly order blood tests or imaging procedures, and perform further specific tests to identify the underlying disease. 

It is essential to emphasize that a change in your cat’s sleep behavior doesn’t necessarily point to a severe illness, but it’s better to be safe and seek professional opinion. The sooner a disease is detected and treated, the better the chances of successful treatment and recovery of your beloved cat. 

When it comes to your cat’s health, you should always be attentive and consult a veterinarian if you suspect problems. Regular veterinary check-ups and open communication with your veterinarian are key to ensuring your cat’s health and well-being. 


It is essential to understand that cats’ sleep behavior can vary greatly and is influenced by various factors. If your cat sleeps a lot, as long as it is healthy and active and shows no other signs of illness, there is generally no cause for concern. Nevertheless, you should pay attention to changes in your cat’s sleep behavior and always consult a veterinarian if you have concerns! 

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