# Why Is My Kitten Shaking or Trembling? Kittens shake for many reasons, and most of them are harmless. A chill, a nap twitch, or plain excitement can all make a small body tremble. But shaking can also signal low blood sugar, low body temperature, or a neurological problem, so the pattern and timing matter. This article is educational and is not a substitute for veterinary diagnosis or treatment. ## Quick Answer - A kitten that trembles briefly after waking, during play, or in a cold room is usually fine once warmed or calmed. - Shaking with weakness, collapse, drooling, vomiting, or a body that feels cold to the touch needs emergency care right away. - Small kittens have very little stored energy, so missed meals can cause low blood sugar and trembling within hours. - Film the episodes on your phone. Video helps your veterinarian tell a tremor apart from a seizure or a movement disorder. - Never give human medicine, alcohol rubs, or home remedies for shaking. Some are toxic to cats. ## What Shaking Looks Like in a Kitten Shaking, trembling, twitching, and vibrating all describe rapid, repeated muscle movements. The medical word for a rhythmic shake is tremor. A tremor can affect the whole body, one limb, or just the head [1]. Some kittens shake only when they stand and bear weight, and the shaking stops when they are lifted off their feet [2]. Some episodes are not true tremors at all. A kitten may have a movement disorder that causes stiff limbs, slow motion, a hunched back, or a strange crawling gait during an episode, with a completely normal exam between episodes [3]. Seizures look different again, often with loss of awareness, paddling, or drooling. ### Is it normal for kittens to shake? Yes, in some situations. Normal shaking is usually brief, mild, and tied to a trigger: - Cold. Young kittens cannot regulate body temperature well. - Sleep. Twitching during deep sleep is common and stops on waking. - Excitement or stress. A vet visit, a new home, or a loud noise can cause trembling. - Hunger. A skipped meal can bring on mild shakiness. - Purring. A strong purr can make the whole body vibrate, especially in a tiny kitten. If your kitten is eating, playing, growing, and acting normal between episodes, the odds are good that nothing serious is going on. If the shaking is constant, getting worse, or comes with any other symptom, treat it as a medical problem until proven otherwise. ## Why Is My Kitten Shaking? The Main Causes The table below groups the common reasons a kitten shakes, the clues that point to each one, and how fast you need to act. | Cause | Typical clues | How urgent | |---|---|---| | Cold or hypothermia | Cold ears and paws, huddling, weakness, recent bath or outdoor exposure | Emergency if the kitten is limp or feels cold | | Low blood sugar (hypoglycemia) | Tiny or underweight kitten, missed meals, wobbling, drooling, collapse | Emergency | | Excitement, stress, or sleep twitching | Shaking only during play, vet visits, or sleep, normal between episodes | Routine | | Toxin exposure | Sudden shaking after contact with a poison, human medication, or a toxic plant | Emergency | | Congenital portosystemic shunt | Head or whole-body tremors, often at rest, poor growth, drooling, lethargy | Same-day to urgent | | Feline infectious peritonitis (FIP) | Tremors plus fever, poor appetite, weight loss, neurological signs | Urgent | | Degenerative brain disease | Slowly worsening tremor, especially when reaching for food or walking | Routine to urgent | | Paroxysmal dyskinesia | Sudden episodes of stiff or slow limbs, normal exam between episodes | Routine | | Orthostatic tremor | Shaking only while standing, stops when lifted | Routine | ### Cold and hypothermia A kitten's small body loses heat fast. Chilling causes shivering, and severe chilling causes weakness and a slow, wobbly walk. Warm the kitten gradually with body heat and blankets, and call your veterinarian if the kitten is limp, unresponsive, or feels cold despite warming. ### Low blood sugar Hypoglycemia is one of the most common emergencies in very young kittens. It can cause trembling, wobbling, drooling, and collapse. If your kitten is tiny, was separated from the mother early, or has not eaten in several hours, low blood sugar moves to the top of the list. This is a same-day emergency, and a kitten that is limp or unresponsive needs care immediately. ### Toxins and poisons Intoxication was one of the most common causes of tremors in a large review of cats with shaking, found in about 15 percent of cases [4]. Common household dangers include human medications, certain plants, insecticides, and antifreeze. If you suspect a poisoning, call your veterinarian or a pet poison hotline right away. Do not wait for symptoms to worsen. ### Liver shunts and hepatic encephalopathy A congenital portosystemic shunt is an abnormal blood vessel that lets blood bypass the liver. This allows toxins to build up and reach the brain, causing tremors. In one review of 19 cats with this condition, tremors were the only neurological sign in 6 of them [1]. Tremors were generalized in 10 cats and limited to the head in 8 [1]. Many were episodic and happened at rest [1]. Of the 14 cats with follow-up, tremors stopped in 9 after surgical or medical treatment [1]. This is a treatable condition, so early diagnosis matters. ### Feline infectious peritonitis FIP appeared in about 16 percent of cats with tremors in the same large review [4]. It is a serious viral disease that can affect the brain and nervous system. Signs often include fever, poor appetite, weight loss, and a swollen belly along with the shaking. ### Degenerative brain disease Degenerative encephalopathy was the single most common diagnosis in that review, at about 18 percent [4]. The most frequent forms were suspected cerebellar cortical degeneration and lysosomal storage diseases, and many of these cats had tremors that got worse when they tried to eat or reach for something [4]. These conditions tend to worsen slowly over weeks to months. ### Movement disorders and unusual tremors Paroxysmal dyskinesia causes sudden episodes of abnormal movement. In a study of 25 cats, all had shifting limb dystonia, and many had slow motion, an abnormal gait, a hunched back, or a drooping tail during episodes [3]. The median age was 3.5 years, so this is more common in young adults than tiny kittens, and the neurological exam between episodes was normal in every cat [3]. A separate report described an 11-month-old cat with a tremor only in the back legs that appeared when standing and disappeared when the cat was lifted [2]. That cat was diagnosed with pseudo-orthostatic tremor and stayed playful and ambulatory despite the shaking [2]. Rare structural problems can also cause head shaking. One young adult cat had a bone abnormality near the base of the skull with bleeding that pressed on the brain, causing head shaking, cautious walking, and lethargy [5]. These cases are uncommon but show why a full workup matters when shaking does not fit a simple pattern. If the shaking is focused on the head and ears, see [Why Is My Cat Shaking Her Head And Ears](/knowledge/veterinary-medicine/clinical-methods/why-is-my-cat-shaking-her-head-and-ears) and [Cat Shaking Head and Scratching Ears: Causes and Urgency](/knowledge/veterinary-medicine/vet-visit-decisions/cat-shaking-head-scratching-ears). ## Red Flags That Make It an Emergency Go to an emergency clinic now if your kitten has any of these: - Collapse, unresponsiveness, or a kitten you cannot wake - A body that feels cold to the touch, especially with weakness - Trembling with drooling, vomiting, or a dazed look - Known or suspected contact with a poison or human medication - Trouble breathing, a blue tinge to the gums, or open-mouth breathing - A seizure that lasts more than a minute or repeats - A kitten that cannot stand or walk - Shaking after a fall, a bite, or any head injury For less dramatic signs, call your veterinarian the same day. That includes a kitten that is shaking more often than before, a kitten that is not eating well, or a kitten that seems weak or wobbly but is still alert. If you are unsure whether the situation is urgent, [Cat Shaking or Trembling: Is It an Emergency?](/knowledge/veterinary-medicine/vet-visit-decisions/cat-shaking-when-emergency) walks through the decision step by step. ## What You Can Safely Do at Home While you wait for your appointment or drive to the clinic, keep these steps in mind. - Warm the kitten gently. Use your body heat, a blanket, or a warm (not hot) water bottle wrapped in a towel. Never use a hair dryer or heating pad directly on the skin. - Offer food if the kitten is alert and able to swallow. A small meal can help if low blood sugar is the cause. Never syringe food or liquid into the mouth of a kitten that is weak, limp, or unable to swallow. - Reduce stress. Dim the lights, lower the noise, and handle the kitten as little as possible. - Film the shaking. A short video of the episode is one of the most useful things you can bring to the visit. - Write down the timeline. Note when the shaking started, how long episodes last, what triggers them, and what else has changed. - Do not give any medication. Human drugs and leftover pet prescriptions can be dangerous, and the dose for a kitten is calculated by your veterinarian based on weight and health. ## What Your Veterinarian Will Check Your veterinarian will start with a full physical and neurological exam. They will watch your kitten stand, walk, and reach for food, and they may lift the kitten to see whether the shaking stops, which is a clue in some tremor conditions [2]. Testing often includes: - Blood glucose, to rule out low blood sugar - Bloodwork and a bile acid test, to screen for a liver shunt [1] - Infectious disease testing, including for FIP [4] - Imaging such as ultrasound, MRI, or CT if a structural or brain problem is suspected [5] - Video review of the episodes, which is often how movement disorders are identified [3] Treatment depends on the cause. Some kittens need warming and glucose. Some need surgery or medical management for a liver shunt, which resolved tremors in most cats in one review [1]. Some need anti-seizure or tremor medication, though response varies. In one reported case, gabapentin at 10 to 20 mg/kg by mouth every 8 hours for 3 weeks and clonazepam at 0.1 mg/kg by mouth every 12 hours for 1 day did not improve the tremor, and the clonazepam caused unacceptable side effects [2]. Your veterinarian will choose any medication and dose based on your kitten's specific situation. ## Prevention and Monitoring You cannot prevent every cause of shaking, but you can lower the risk and catch problems early. - Feed small, frequent meals. Young kittens need to eat often to keep blood sugar steady. - Keep your kitten warm, especially after baths and during car rides. - Kitten-proof your home. Store all medications, cleaners, and toxic plants out of reach. - Keep up with wellness visits and vaccines. - Track episodes in a notebook or phone app. Note the date, time, duration, and what was happening. - Weigh your kitten weekly. A kitten that is not gaining weight needs a veterinary visit. If the shaking changes in frequency, duration, or severity, call your veterinarian. Patterns over time are often more useful than a single episode. ## Limitations and When to Contact a Veterinarian This article cannot tell you what is causing your kitten's shaking. Only a veterinarian who examines your kitten can do that, and individual cases always need professional evaluation. Contact a veterinarian the same day if your kitten is shaking more often, eating less, losing weight, or acting weaker than usual. Go to an emergency clinic now if your kitten collapses, cannot be woken, feels cold, has trouble breathing, or has a seizure. If you suspect poisoning, call your veterinarian or a pet poison hotline immediately. ## Frequently Asked Questions ### Why is my kitten wobbly all of a sudden? A sudden wobble often points to low blood sugar, chilling, or a toxin. In a very young kitten, missed meals are a common trigger. If your kitten is limp, drooling, or hard to wake, treat it as an emergency. ### Why does my kitten vibrate? A strong purr can make a tiny body vibrate, and that is normal. Constant vibration without purring, or vibration with weakness or poor appetite, needs a veterinary exam. Some tremors are only visible when the kitten stands or bears weight [2]. ### Why is my kitten jerking? Jerking during sleep is usually normal. Jerking while awake can be a tremor, a movement disorder, or a seizure. Movement disorders often come in episodes with a normal exam in between [3], while seizures usually involve a loss of awareness. ### Is it normal for kittens to shake? Brief shaking from cold, sleep, excitement, or hunger is common and usually harmless. Shaking that is constant, worsening, or paired with other symptoms is not normal. When in doubt, have your kitten checked. ### Why is my cat shaking? In older cats, shaking has many of the same causes as in kittens, plus age-related conditions. A large review found the most common diagnoses were degenerative brain disease, FIP, liver shunts, intoxication, and polyneuropathy [4]. Your veterinarian can narrow the list with an exam and testing. ## Related Articles - [Why Is My Cat Shaking Her Head And Ears](/knowledge/veterinary-medicine/clinical-methods/why-is-my-cat-shaking-her-head-and-ears) - [Cat Shaking or Trembling: Is It an Emergency?](/knowledge/veterinary-medicine/vet-visit-decisions/cat-shaking-when-emergency) - [Cat Shaking Head and Scratching Ears: Causes and Urgency](/knowledge/veterinary-medicine/vet-visit-decisions/cat-shaking-head-scratching-ears) - [Cats Ears Twitching And Shaking Head](/knowledge/veterinary-medicine/clinical-methods/cats-ears-twitching-and-shaking-head) - [Cat Shaking Head And Scratching Ear](/knowledge/veterinary-medicine/behavior/cat-shaking-head-and-scratching-ear) - [Cat Head Shaking and Ear Problems: What to Know](/knowledge/veterinary-medicine/skin-allergy-and-ear-care/cat-head-shaking-ear-problems) ## References 1. [Tremors in cats with hepatic encephalopathy-congenital portosystemic shunts or postattenuation neurological syndrome](https://pubmed.ncbi.nlm.nih.gov/39539156/). The Veterinary record, 2025. 2. [Pseudo-orthostatic tremor in a cat](https://pubmed.ncbi.nlm.nih.gov/40186417/). Journal of veterinary internal medicine, 2025. 3. [Phenotypic characteristics of paroxysmal dyskinesia in 25 cats](https://pubmed.ncbi.nlm.nih.gov/41881802/). The Journal of small animal practice, 2026. 4. [Tremors in cats: 105 cases (2004-2023)](https://pubmed.ncbi.nlm.nih.gov/39701372/). Veterinary journal (London, England : 1997), 2025. 5. [Occipital Bone Angiomatosis and Chronic Subdural Hematoma Causing Severe Cerebellar and Brainstem Compression and Obstructive Hydrocephalus in a Young Adult Cat](https://pubmed.ncbi.nlm.nih.gov/42522416/). Veterinary radiology & ultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association, 2026. ## Further Reading - [American Veterinary Medical Association: First Aid Tips for Pet Owners](https://www.avma.org/resources-tools/pet-owners/emergencycare/first-aid-tips-pet-owners) - [Merck Veterinary Manual: Cat Owners](https://www.merckvetmanual.com/cat-owners) - [Cornell Feline Health Center: Health Information](https://www.vet.cornell.edu/departments-centers-and-institutes/cornell-feline-health-center/health-information)