Why is My Cat Trembling While Purring

Why is My Cat Trembling While Purring?

Cats are enigmatic creatures that often exhibit signs and behaviors that leave their owners puzzled. One such behavior is when a cat trembles or shakes while purring. Watching your furry companion shake while purring can cause anxiety and worry, but it is not always a sign of a serious medical issue.

In this post, we will explore the potential reasons why your cat may be trembling while purring.


The most common reason why cats shake while purring is simply that they are happy. Typically, slow and rhythmic trembles that occur while purring are a sign your cat is relaxed and content. When cats purr, they release endorphins, hormones that help them relax and elevate their mood. This state of relaxation can cause your cat’s muscles to relax, hence the trembling.


Cats may also shake when purring if they are in pain. If your cat has an underlying health issue, such as arthritis or an injury, it may cause them to tremble or shake. The purring, in this case, is known to release pain-relieving endorphins, which may make the cat feel better. If you suspect your cat’s trembling is due to pain, it is best to take them to the vet for a check-up.


Sometimes cats may tremble or shake while purring due to fear or anxiety. Loud noises, strange people or pets are common triggers for such behavior. In this instance, your cat’s purring is a form of self-soothing as it releases endorphins that reduce feelings of stress. If you notice your cat trembling while purring and suspect it is due to fear or anxiety, try identifying the triggering factor and remove it from your cat’s environment.

Hyperesthesia Syndrome

Hyperesthesia Syndrome, also known as rippling skin disorder, is a condition that causes cats to experience unusual sensations on their skin. This condition leads cats to experience sudden body tremors while purring, as if they are being tickled. The cause of hyperesthesia syndrome is unknown, but it is believed to occur due to a number of factors, such as allergies, stress, or an underlying behavioral issue. It is essential to seek veterinary assistance if you notice your cat displaying such symptoms.

Other Potential Causes

Other potential reasons for a cat’s trembling may include a fever, muscle weakness, neurological problems, or even drugs if the cat has recently undergone sedation. It is always best to consult with a veterinarian if you notice your cat trembling while purring to rule out any underlying health or behavioral issues.


Cats do not always communicate effectively with humans, and their behaviours can often be puzzling. Understanding what your cat’s trembles or shakes while purring mean can help you identify the problem and provide them with the necessary care. Always consult with a veterinarian if you notice any unusual behaviors as this can be a sign of underlying health or behavioral issues that require attention.

However, in most cases, trembles while purring are harmless and are just a sign that your furry friend is happy and content.

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