Cat Shaking or Trembling: Causes & What to Do

Quick Answer
  • Cat shaking or trembling is a symptom, not a diagnosis. Common causes include fear or cold, pain, nausea, fever, low blood sugar, toxin exposure, neurologic disease, and seizures.
  • A single brief episode in an otherwise normal cat may be monitored closely, but repeated episodes, full-body tremors, stumbling, hiding, vomiting, or behavior changes mean your cat should be seen soon.
  • If you suspect exposure to a dog flea product with permethrin, rodenticide, human medication, or another toxin, treat it as urgent and contact your vet or poison guidance right away.
  • Bring a video of the episode if you can do so safely. Videos often help your vet tell the difference between tremors, muscle twitching, pain-related shaking, and seizures.
Estimated cost: $40–$90

Common Causes of Cat Shaking or Trembling

Cats can shake for reasons that range from mild to urgent. Some cats tremble when they are cold, frightened, stressed, or recovering from a stressful event like travel. Pain can also cause trembling, especially with injuries, abdominal discomfort, urinary problems, or arthritis flare-ups. Nausea, fever, and weakness may look like shaking too, so the pattern matters.

More serious causes include toxin exposure, low blood sugar, low calcium, neurologic disease, and seizures. Cats are especially sensitive to some chemicals and medications. Permethrin from dog flea products is a well-known cause of muscle fasciculations, tremors, and seizures in cats. Rodenticides and some human medications can also cause tremors or seizures. In kittens, congenital neurologic conditions such as cerebellar hypoplasia can cause persistent tremor-like movement, especially when trying to eat or walk.

Not every shaking episode is a seizure. Tremors are often rhythmic and your cat may stay aware of their surroundings. Seizures can involve loss of awareness, paddling, jaw chomping, drooling, urination, or a confused period afterward. Your vet may also consider metabolic causes such as liver disease, kidney disease, electrolyte problems, or low blood sugar, because these can trigger shaking or seizure-like episodes.

If the shaking is new, getting worse, or happening with other symptoms, it is safest to have your cat examined. A short phone video, the timing of episodes, and any possible exposure history can give your vet important clues.

When to See the Vet vs. Monitor at Home

See your vet immediately if your cat has full-body tremors, a seizure, collapse, trouble breathing, pale gums, repeated vomiting, severe weakness, a very high or very low body temperature, or possible toxin exposure. Emergency care is also warranted if the shaking lasts more than a few minutes, happens in clusters, or your cat seems disoriented afterward. Cats with status epilepticus or repeated seizures need urgent treatment.

A same-day or next-day visit is a good idea if the shaking keeps coming back, your cat is hiding, seems painful, stops eating, cries out, walks oddly, or has ear symptoms like head shaking with discharge. Even if the episode stops, recurring tremors can point to pain, ear disease, metabolic illness, or neurologic disease that should not wait too long.

You may be able to monitor at home for a short time if the trembling is mild, brief, and clearly linked to being cold or startled, and your cat returns to normal right away. Keep your cat warm, quiet, and indoors. Do not give human pain relievers or other medications unless your vet specifically tells you to. If anything changes, or if you are not sure what caused the episode, schedule an exam.

If you think your cat got into a toxin, do not wait for symptoms to worsen. Contact your vet, an emergency hospital, or ASPCA Animal Poison Control. If your cat is unconscious, having trouble breathing, or actively seizing, go to the nearest veterinary clinic immediately.

What Your Vet Will Do

Your vet will start with a history and physical exam. Expect questions about when the shaking started, how long it lasts, whether your cat stays aware during the episode, and whether there was any possible exposure to dog flea products, rodenticides, human medications, cannabis products, or other toxins. A video of the episode can be extremely helpful.

Initial testing often includes bloodwork and sometimes a urinalysis to look for low blood sugar, electrolyte problems, kidney or liver disease, infection, or other metabolic causes. Depending on the symptoms, your vet may also recommend blood pressure measurement, ear exam and cytology, X-rays, or abdominal ultrasound. If seizures or neurologic disease are suspected, more advanced testing may include infectious disease testing, cerebrospinal fluid analysis, CT, or MRI, often through a referral hospital.

Treatment depends on the cause. Your vet may stabilize body temperature, give IV fluids, control nausea, treat pain, manage toxin exposure, or use anti-seizure medication if needed. Cats with severe tremors or repeated seizures may need hospitalization for monitoring and supportive care.

Because shaking has many possible causes, treatment is not one-size-fits-all. The goal is to identify the underlying problem and match the care plan to your cat's needs, your goals, and what is medically appropriate.

Treatment Options

Spectrum of Care means you have options. Here are treatment tiers at different price points.

Budget-Conscious Care

$120–$350
Best for: Cats with mild, brief, non-progressive trembling who are stable, alert, eating, and not showing emergency signs, or when pet parents need a stepwise diagnostic plan.
  • Office or urgent-care exam
  • Focused neurologic and pain assessment
  • Temperature check and hydration assessment
  • Targeted basic testing such as blood glucose and/or limited bloodwork
  • Outpatient supportive care when appropriate
  • Home monitoring instructions and recheck plan
Expected outcome: Often good if the cause is mild stress, cold exposure, minor pain, or a straightforward metabolic issue caught early. Prognosis depends on the underlying cause.
Consider: Lower upfront cost, but fewer diagnostics may mean the cause is not fully identified on the first visit. Some cats will need follow-up testing or escalation if episodes continue.
Most Common

Recommended Standard Treatment

$300–$900
Best for: Most cats with new or recurrent shaking, cats with additional symptoms like vomiting, weakness, pain, or appetite loss, and cases where your vet needs a practical first-line workup.
  • Complete exam
  • CBC/chemistry panel and often urinalysis
  • Blood glucose and electrolyte evaluation
  • Targeted imaging such as X-rays when indicated
  • Ear exam/cytology if head shaking or ear disease is suspected
  • Medications or supportive care based on findings
  • Short-interval recheck
Expected outcome: Good to fair for many treatable causes such as pain, fever, ear disease, mild toxin exposure, or metabolic abnormalities. Faster diagnosis usually improves the outlook.
Consider: Higher cost than a limited visit, and some causes still require referral or hospitalization. It may not fully answer complex neurologic cases.

Advanced / Critical Care

$900–$2,500
Best for: Cats with severe tremors, repeated seizures, collapse, suspected toxin exposure, abnormal neurologic exam, or cats who are unstable and need immediate monitoring.
  • Emergency exam and stabilization
  • IV catheter, fluids, active warming or cooling as needed
  • Hospitalization and continuous monitoring
  • Expanded bloodwork and toxin-directed care
  • Advanced imaging such as CT or MRI through referral
  • Possible cerebrospinal fluid testing or neurology consult
  • Anti-seizure treatment and intensive supportive care
Expected outcome: Variable. Some toxin and metabolic cases improve well with rapid treatment, while severe neurologic disease or prolonged seizures can carry a guarded prognosis.
Consider: Most intensive and highest cost range. Referral, sedation, or anesthesia may be needed for advanced imaging, and not every case requires this level of care.

Cost estimates as of 2026-03. Actual costs vary by location, clinic, and individual case.

Questions to Ask Your Vet About Cat Shaking or Trembling

Bring these questions to your vet appointment to get the most out of your visit.

  1. Does this look more like a tremor, pain response, muscle twitching, or a seizure?
  2. What are the most likely causes based on my cat's age, exam findings, and episode pattern?
  3. Which tests are most useful today, and which ones could wait if we need a stepwise plan?
  4. Are there any signs that make toxin exposure more likely in my cat's case?
  5. Should I monitor at home, or do you recommend same-day treatment or hospitalization?
  6. What changes at home would mean I should go to an emergency hospital right away?
  7. Would a video diary of episodes help, and what details should I track?
  8. If this happens again, what should I do in the moment to keep my cat safe?

Home Care & Comfort Measures

If your cat is stable and your vet says home monitoring is reasonable, keep them in a quiet, dim, safe room away from stairs and other pets. Offer warmth with a blanket or heated bed set safely, especially if your cat may be cold. Make sure fresh water, food, and a litter box are easy to reach.

Record what you see. Note the time, duration, body parts involved, whether your cat stayed aware, and any triggers such as eating, excitement, loud noises, or recent medication use. A clear phone video can be one of the most helpful things you bring to your vet appointment.

Do not give human medications, essential oils, CBD, or leftover pet medications unless your vet specifically recommends them. Many substances that seem harmless can worsen tremors or be toxic to cats. If you suspect exposure to a toxin, save the package or product name and bring that information with you.

If your cat has a seizure-like event, keep them away from edges and hard objects, dim the lights, and avoid putting your hands near their mouth. Time the episode if you can do so safely. Afterward, keep the room calm and contact your vet for next steps. If the episode lasts more than a few minutes, repeats, or your cat does not recover normally, seek emergency care right away.

Find a Vet Near You