Why Does My Cat Shake When He Sleeps? [Causes & Remedy]

Cats are some of the most enigmatic and endearing creatures. Their sleep habits, much like their general behavior, often leave owners wondering if they truly understand their feline companions. One common concern that cat owners might observe is their cat shaking or twitching while asleep. While this behavior may seem unusual or worrisome at first, it can often be completely normal. Cats, just like humans, experience a variety of stages during sleep, and some of these stages can lead to physical reactions that can appear like shaking or twitching. However, there are many possible reasons why a cat might shake in its sleep, ranging from simple reflexes to potential health concerns.

Understanding why this happens and when it might indicate something more serious is essential for any cat owner. In this guide, we’ll delve into the most common reasons for this behavior, explain when it’s time to be concerned, and provide guidance on how to respond as a responsible cat owner. Additionally, we’ll explore when it’s necessary to consult a veterinarian to ensure your cat’s health is not at risk.

Why Does My Cat Shake When He Sleeps?

The shaking or twitching that cats sometimes experience during sleep can happen for several reasons, many of which are completely natural. To understand this behavior, it’s important to recognize that cats, like humans, go through different stages of sleep. These stages include light sleep, deep sleep, and REM (Rapid Eye Movement) sleep. During REM sleep, your cat’s brain is highly active, and this is the time when most dreams occur. This stage is also the one during which the body might exhibit physical responses, like twitching, rapid eye movement, and, in some cases, shaking.

The shaking may seem alarming, but it’s often a sign that your cat’s brain is processing dreams, much like humans do. It’s important to remember that cats are hunters by nature, and their dreams often reflect hunting or chasing behaviors. This could explain the sudden jerks or shakes as your cat "hunts" in its sleep. In fact, the shaking or twitching can sometimes be so intense that the cat’s body may appear to ripple, even though they remain asleep.

Common Reasons For Shaking During Sleep

Several common reasons can explain why a cat shakes during sleep, most of which are harmless:

1. Dreaming (REM Sleep): As mentioned, REM sleep is a time when your cat’s brain is active, processing the day’s experiences. During this time, the body might twitch, jerk, or shake as the cat’s muscles react to the dreams. This is entirely natural and is similar to what humans experience when they dream, sometimes involving physical reactions like twitching or movement.

2. Muscle Relaxation: While cats are known for being graceful and agile, they also have highly developed muscles. During sleep, these muscles are at rest and might experience small involuntary twitches or spasms. This can sometimes result in what looks like shaking but is simply muscle relaxation and minor muscle contractions.

3. Temperature Regulation: Cats, like all mammals, regulate their body temperature while they sleep. If your cat is too cold or too warm, you may notice trembling or shaking during sleep as their body tries to regulate its temperature. This is more common in kittens, elderly cats, or cats with thinner coats.

4. Stress or Anxiety: Just like people, cats can experience stress, which may carry over into their sleep. If your cat is feeling anxious or stressed due to changes in their environment, a move, or even a loud noise during the day, they might exhibit signs of restlessness while asleep, including shaking or twitching.

5. Health Conditions: Certain medical conditions, such as epilepsy, neurological disorders, or muscle issues, may cause your cat to shake or tremble, including during sleep. While these instances are rarer, they should be considered, especially if shaking becomes frequent or severe.

When To Be Concerned

Most of the time, shaking during sleep is completely benign. However, there are instances when it may signal a health concern, and it’s crucial to know when to be worried. Here are some signs to look out for:

1. Excessive or Continuous Shaking: If your cat is shaking continuously, not only during sleep but also while awake or at rest, it could be a sign of a more serious health issue, such as a seizure, pain, or a neurological disorder.

2. Shaking Accompanied by Other Symptoms: If shaking is accompanied by other abnormal symptoms, such as loss of coordination, difficulty walking, drooling, vomiting, or behavioral changes, this could be a sign of a serious condition that requires immediate veterinary attention.

3. Shaking When Waking Up: If the shaking continues after your cat wakes up, it might be indicative of a neurological problem or even an issue with their blood sugar or metabolic function. Cats with low blood sugar or issues with their thyroid may experience shaking or trembling when they wake up.

4. Shaking in a Young or Elderly Cat: Kittens and elderly cats are more prone to temperature fluctuations, and shaking in these cats could be a sign of being too cold or even having a fever. However, in older cats, persistent shaking could also be linked to arthritis, muscle degeneration, or other age-related health concerns.

How To Respond As A Cat Owner

As a cat owner, the first thing to remember when you see your cat shaking while sleeping is that this behavior is most often normal. However, if you’re unsure or concerned, here are some steps you can take to ensure your cat’s well-being:

1. Observe Your Cat: Pay close attention to the frequency and intensity of the shaking. Is it happening only during sleep, or does it occur while your cat is awake? Monitor for other symptoms like lethargy, changes in appetite, or abnormal behavior, as these can provide additional clues.

2. Ensure a Comfortable Sleeping Environment: Make sure your cat has a warm, quiet, and comfortable place to sleep. If your cat is shaking due to cold, consider providing them with a heated bed or blanket, especially if they are elderly, sick, or have a thin coat.

3. Manage Stress: If you suspect your cat’s shaking is related to stress or anxiety, try to identify the source of the stress. Is it a new pet in the household, a change in their routine, or loud noises? Providing a calm and stable environment can help alleviate anxiety.

4. Consider Your Cat’s Diet: Poor nutrition or an unbalanced diet can sometimes cause shaking. Make sure your cat is eating a high-quality, well-balanced food suited to their age, size, and health needs.

When To Consult A Veterinarian

If you notice that your cat’s shaking is frequent, severe, or accompanied by any of the concerning symptoms mentioned earlier, it’s important to consult a veterinarian. Here’s when you should reach out for professional help:

• If the shaking persists or worsens over time.
• If your cat exhibits signs of illness, such as lethargy, difficulty walking, or vomiting.
• If shaking is followed by abnormal behavior, such as disorientation or aggression.
• If your cat is older, sick, or has underlying health conditions and the shaking seems to be related to pain or discomfort.

A veterinarian will conduct a thorough examination, potentially including blood tests, neurological evaluations, and imaging, to determine whether there’s an underlying health condition causing the shaking.

Conclusion

Shaking while sleeping is generally a harmless behavior for cats, often linked to the natural stages of sleep or muscle relaxation. In most cases, it’s simply a sign that your cat is dreaming, regulating body temperature, or experiencing a harmless spasm. However, as a cat owner, it’s crucial to be aware of any changes in your cat’s behavior, especially if the shaking is persistent or accompanied by other symptoms. By staying observant and providing a comfortable environment, you can help ensure your cat’s health and well-being. And if in doubt, consulting a veterinarian can provide peace of mind and ensure that your feline friend is in good health.

FAQs

What Causes My Cat To Shake While Sleeping?

Shaking or twitching during sleep in cats can be caused by rapid eye movement (REM) sleep, where muscles may twitch as part of dreaming. This is a normal, involuntary response during deep sleep, similar to humans having sleep jerks.

Is It Normal For My Cat To Shake When It Sleeps?

Yes, it is normal for cats to shake or twitch in their sleep, especially during REM sleep. These movements are typically harmless and indicate that your cat is dreaming. However, if the shaking is excessive or accompanied by other symptoms, it may warrant a visit to the vet.

Can My Cat Be Dreaming When It Shakes In Its Sleep?

Yes, just like humans, cats experience REM sleep, which is when they are most likely to dream. The shaking or twitching is often a physical manifestation of these dreams, such as running or playing.

Could My Cat’s Shaking While Sleeping Be A Sign Of A Medical Problem?

While mild shaking during sleep is usually harmless, excessive shaking, trembling, or twitching could indicate medical issues such as seizures, hypoglycemia, or muscle problems. If the shaking is persistent or seems unusual, it’s important to consult a veterinarian.

Does The Breed Of My Cat Affect How Much It Shakes During Sleep?

Certain breeds, particularly those with more active or excitable temperaments, may show more noticeable twitching or shaking during sleep. However, this is usually still a normal part of their sleep cycle and not an indication of a health issue.

Can Anxiety Cause My Cat To Shake While Sleeping?

Anxiety can cause trembling or shaking when a cat is awake, but it is less likely to cause shaking during sleep. If your cat is experiencing anxiety, it may show other signs, such as excessive grooming, hiding, or changes in appetite.

How Can I Tell If My Cat’s Sleep Shaking Is Normal Or Concerning?

Normal shaking during sleep is usually mild and occurs during REM sleep. If the shaking is accompanied by other signs of distress, such as irregular breathing, disorientation upon waking, or muscle stiffness, it may indicate a health issue, and a vet should be consulted.

Why Does My Older Cat Shake During Sleep?

Older cats may experience more frequent muscle twitching or shaking during sleep due to changes in muscle tone, arthritis, or other age-related health conditions. If the shaking seems abnormal or is accompanied by other signs, a veterinarian can help determine the cause.

Does My Cat’s Diet Affect Shaking During Sleep?

A poor diet or nutritional deficiencies, such as a lack of taurine or B vitamins, can contribute to muscle spasms or tremors, though it is unlikely to be the primary cause of shaking during sleep. Ensure your cat is eating a balanced diet to maintain overall health.

How Can I Help My Cat If It Shakes Too Much During Sleep?

If your cat’s shaking during sleep seems excessive or abnormal, consider taking it to the vet for a full examination. Treatment may include addressing underlying medical conditions, adjusting its diet, or managing anxiety or stress. Keep your cat in a calm and comfortable environment to help reduce stress-related shaking.