Why Is My Hedgehog Shaking? Causes and When to Worry

Name: Why Is My Hedgehog Shaking? Causes and When to Worry
Creator: Dr. Zubair Khalid

By Dr. Zubair Khalid, DVM, MS, PhD · 2026-10-03

Why is my hedgehog shaking? In most cases, a hedgehog that shakes is either cold, stressed, or showing a normal self-anointing quiver. Some shaking, though, points to a hibernation attempt or a neurological problem that needs a veterinarian right away.

This article is educational and is not a substitute for veterinary diagnosis or treatment.

Quick Answer

A brief full-body quiver during exploration or self-anointing is usually normal hedgehog behavior.
Shaking that comes with a cool cage, a curled ball, and a refusal to eat often means cold stress or a hibernation attempt, which is a medical emergency in pet hedgehogs.
Tremors that continue while the hedgehog is warm, calm, and eating can point to neurological disease, pain, or infection.
Warm the cage gradually to the low-to-mid 70s Fahrenheit and do not force food or water into a shaking hedgehog's mouth.
Call an exotic-animal veterinarian the same day for any shaking that lasts more than a few minutes, repeats, or comes with weakness, wobbling, or appetite loss.

What Hedgehog Shaking Actually Looks Like

Owners describe this sign in different ways. Some say their hedgehog is trembling. Others call it shivering or twitching. The words matter less than the pattern.

Normal quivering is short and situational. A hedgehog may vibrate slightly when it first wakes up, when it is startled, or during self-anointing (the head-turning, spitting, frothing behavior hedgehogs use to spread scents over their spines). This kind of quiver stops once the trigger passes.

Abnormal shaking is different. It may be continuous. It may affect only the head, one leg, or the whole body. It may come with a wobbly walk, a hedgehog that cannot roll into a ball, drooling, or a hedgehog that stays hunched and still. Some hedgehogs tremble because they are cold. Others shake because their nervous system is misfiring.

Because hedgehogs are small prey animals, they hide illness well. By the time shaking is obvious, the problem may already be advanced.

Causes of Shaking in Hedgehogs

Normal Quivering and Self-Anointing

A hedgehog that quivers for a few seconds while sniffing a new object, a new person, or a new food is usually fine. Self-anointing often includes head jerks, frothing, and a brief body quiver. This is a normal behavior, not a symptom.

Stress can also cause short trembling. A new cage, a loud room, a car ride, or handling by a stranger may make a hedgehog shiver and ball up. Once the hedgehog is back in a quiet, warm, familiar space, the trembling should stop.

Cold Stress and Hibernation Attempts

This is the most common serious cause of shaking in pet hedgehogs. Hedgehogs are not true hibernators in captivity, and a pet hedgehog that drops into a hibernation attempt can die. When body temperature falls, the hedgehog may shiver, curl tightly, refuse food, and become cool to the touch.

A hibernation attempt is a medical emergency. It is not the same as a hedgehog sleeping more in winter. If your hedgehog feels cold, is shaking, and will not uncurl or eat, warm it gradually and call a veterinarian.

Neurological Signs

Tremors that continue when the hedgehog is warm and calm may point to neurological disease. Head tilting, circling, rolling, head tremors, and a wobbly gait are all neurological signs. Causes include inner ear disease, head trauma, toxin exposure, and infections that reach the brain.

Some infectious diseases in hedgehogs can cause severe illness with high death rates in rescue settings. One outbreak of hemorrhagic enteritis in young hedgehogs had a mortality rate above 35%, with signs including appetite loss, weight loss, and diarrhea (including bloody diarrhea) [1]. Salmonella was isolated from internal organs in that outbreak, and the authors noted the zoonotic risk, meaning the infection can spread to people [1].

Pain, Injury, and Wounds

A hedgehog in pain may tremble, stay hunched, or refuse to move normally. Cuts from garden tools are a real hazard. In one German study, at least 60% of hedgehogs with cutting injuries were found more than 12 hours after the accident, and at least 47% did not survive the injury [2]. A hedgehog with a wound may shake from pain, shock, or infection.

Parasites and Skin Irritation

Fly eggs and maggots (myiasis) can cause intense irritation and illness. In a study of 557 hedgehogs at rehabilitation centers, 15.6% carried fly eggs or larvae, and prevalence was highest in summer [3]. Eggs were found all over the body, while larvae clustered in natural openings and wounds [3]. A hedgehog with maggots may shake, scratch, or become weak.

Toxins and Household Hazards

Hedgehogs can be poisoned by insecticides, rodenticides, some plants, and human foods that are toxic to them. Shaking, drooling, vomiting, and wobbling after exposure to a toxin are emergencies. If you suspect poisoning, call your veterinarian or a pet poison control hotline immediately. Do not wait for symptoms to worsen.

Metabolic and Nutritional Problems

Low blood calcium, low blood sugar, and other metabolic problems can cause tremors. These are diagnosed with blood tests. A hedgehog on an unbalanced diet, or one that has stopped eating, is at higher risk.

Table: Cause, Clues, and Urgency

Cause	Typical clues	How urgent
Normal quivering or self-anointing	Short bursts, triggered by new smells or handling, stops quickly	Not urgent
Stress	Trembling with balling up, new environment, recent handling	Monitor, reduce stress
Cold stress or hibernation attempt	Cool body, tight curl, no appetite, shaking	Emergency now
Neurological disease	Head tilt, circling, tremors while warm, wobbly walk	Same-day vet visit
Pain or injury	Wound, hunched posture, reluctance to move, shaking	Same-day vet visit
Parasites (fly eggs or maggots)	Visible eggs or larvae, scratching, weakness, summer onset	Emergency now
Toxin exposure	Drooling, vomiting, wobbling after exposure	Emergency now
Metabolic problem	Tremors, weakness, poor appetite, weight loss	Same-day vet visit

Red Flags That Make Shaking an Emergency

Call an emergency exotic-animal veterinarian now if your hedgehog has any of these signs:

Shaking that continues for more than a few minutes
A body that feels cool to the touch
A tight ball that will not uncurl
Refusal to eat or drink for more than 12 hours
Wobbling, circling, head tilt, or rolling
Visible wounds, maggots, or fly eggs
Drooling, vomiting, or diarrhea (especially bloody diarrhea)
Seizures or loss of consciousness
Known or suspected exposure to a toxin

Any one of these signs means the hedgehog needs professional care. Shaking alone can be mild, but shaking with any of these signs is not something to watch at home.

What You Can Safely Do at Home

While you wait for your appointment or for a call back from the clinic, keep your hedgehog warm and calm.

Warm the cage gradually. Move the hedgehog to a quiet room and raise the ambient temperature slowly toward the low-to-mid 70s Fahrenheit. Use a safe heat source placed so the hedgehog can move away from it if it gets too warm. Do not use a hot water bottle directly against the skin, and do not put the hedgehog in a hot oven, microwave, or hair dryer.

Do not force food or water. A shaking hedgehog can choke. Offer a shallow dish of water and a small amount of familiar food, but let the hedgehog choose.

Handle gently and briefly. Wrap the hedgehog loosely in a soft towel if you must move it. Keep handling to a minimum.

Write down what you see. Note when the shaking started, how long it lasts, whether it stops when the hedgehog is warm, and whether the hedgehog is eating, drinking, and passing stool. This information helps your veterinarian.

Remove hazards. Check the cage for anything the hedgehog could have chewed or ingested. Check for small openings, sharp edges, and loose bedding.

Do not give any medication. Never give human pain relievers, antibiotics, or supplements. Your veterinarian will calculate any dose from your hedgehog's weight and health.

If your hedgehog is shaking and you also have dogs in the home, do not assume the cause is the same across species. Shaking in dogs has its own list of causes, from pain to neurological disease, and you can read more in Why Is My Dog Shaking?. If your dog's shaking is severe or sudden, see Why Is My Dog Shaking uncontrollably? 7 Causes & Emergency Red Flags. Head shaking in dogs is usually a different problem, often related to the ears, and is covered in Dog Shaking Head Causes.

What the Veterinarian Will Check

Your veterinarian will start with a full history and a hands-on exam. Expect questions about diet, cage temperature, recent handling, other pets, and any possible toxin exposure.

Physical exam. The vet will check body temperature, heart rate, breathing, hydration, and body condition. They will look for wounds, fly eggs, maggots, and skin problems. They will check the eyes, ears, mouth, and limbs.

Neurological exam. The vet will watch your hedgehog walk, check reflexes, look for head tilt, and test how the hedgehog responds to being righted. This helps localize the problem to the brain, inner ear, or spinal cord.

Blood tests. A blood panel can show low blood sugar, low calcium, infection, dehydration, and organ problems. These results guide treatment.

Imaging. X-rays or ultrasound may be used to look for injury, masses, or organ changes.

Fecal and skin testing. A fecal exam can find parasites. Skin scrapings and close inspection can find mites, fly eggs, or larvae. In one study, four different fly species were identified on affected hedgehogs, with Lucilia sericata found on 25.3% of affected animals [3].

Infectious disease testing. If your hedgehog has diarrhea, weight loss, or severe illness, the vet may test for bacterial or viral causes. Salmonella was isolated from multiple organs in an outbreak of hemorrhagic enteritis in young hedgehogs [1].

Treatment depends on the cause. Cold stress and hibernation attempts need gradual warming and supportive care. Neurological disease may need medication, fluids, or further testing. Wounds need cleaning, antibiotics, and sometimes surgery. Parasite infestations need species-appropriate treatment.

Prevention and Monitoring

Keep the cage warm. A stable temperature in the low-to-mid 70s Fahrenheit prevents cold stress and hibernation attempts. Use a reliable thermometer and check it daily.

Feed a balanced diet. A proper hedgehog diet supports normal blood sugar and calcium levels. Ask your veterinarian for a diet plan.

Clean the cage often. Dirty bedding and food waste attract flies. Fly eggs and larvae can develop quickly, especially in summer [3].

Check your hedgehog's body weekly. Look at the belly, legs, face, and natural openings for wounds, swelling, or fly eggs. Early detection makes a big difference.

Hedge-proof your yard and home. Cutting injuries from garden tools are a serious risk, and many injured hedgehogs are found too late for treatment [2]. Check before you mow, trim, or use any sharp tool.

Reduce plastic hazards. Plastic entanglement is a documented cause of death in hedgehogs, with an estimated 4,000 to 7,000 deaths per year in Great Britain alone [4]. Keep plastic bags, rings, and netting out of your hedgehog's space.

Watch for hearing-related startle responses. Hedgehogs hear a very broad range of frequencies, from at least 4 to 85 kHz, with peak sensitivity around 40 kHz [5]. Sudden high-pitched sounds may startle your hedgehog and cause a brief quiver. This is normal, but ongoing stress from loud noises should be avoided.

Keep a health log. Track weight, appetite, stool, and any shaking episodes. Patterns help your veterinarian spot problems early.

Limitations and When to Contact a Veterinarian

This article cannot diagnose your hedgehog. Shaking has many causes, and only a veterinarian who examines your pet can tell the difference between a harmless quiver and a serious problem.

Contact a veterinarian the same day if:

Shaking lasts more than a few minutes or keeps returning
Your hedgehog is eating less or losing weight
You see a head tilt, wobble, or trouble walking
Your hedgehog has a wound, swelling, or skin problem
Your hedgehog has diarrhea or vomiting

Go to an emergency clinic now if:

Your hedgehog feels cold and will not uncurl
Shaking is continuous or severe
Your hedgehog has seizures, collapses, or cannot be roused
You see maggots or fly eggs on the body
You suspect poisoning or toxin exposure
Your hedgehog has bloody diarrhea or is bleeding

Schedule a routine visit if:

Shaking is mild, brief, and only happens during self-anointing or stress
Your hedgehog is eating, drinking, and behaving normally otherwise
You want a baseline health check for a new hedgehog

When in doubt, call. A short phone call can help you decide whether to come in now or monitor at home.

Frequently Asked Questions

Is it normal for a hedgehog to shake?

Brief shaking can be normal, especially during self-anointing or after a sudden noise. Normal quivering stops within seconds once the trigger passes. Shaking that continues, repeats, or comes with weakness is not normal and should be checked by a veterinarian.

Can a cold cage really make my hedgehog shake?

Yes. Cold stress is one of the most common reasons a pet hedgehog shakes. A hedgehog that is too cool may shiver, curl tightly, and stop eating. This can progress to a hibernation attempt, which is life-threatening for pet hedgehogs.

What does a hibernation attempt look like?

A hibernation attempt often looks like a hedgehog that is cold, tightly balled, and unresponsive to normal handling. It may shake or tremble and refuse food. This is an emergency. Warm the hedgehog gradually and contact a veterinarian right away.

Could shaking mean a neurological problem?

Yes. Tremors that continue while the hedgehog is warm and calm can point to neurological disease. Other signs include head tilt, circling, rolling, and a wobbly walk. These signs need a same-day veterinary exam.

Should I give my hedgehog any medicine for shaking?

No. Never give human medications, supplements, or leftover pet medicines to a hedgehog. Your veterinarian will calculate any dose from your hedgehog's weight and health. Giving the wrong drug or dose can be fatal.

References

Outbreak of an infectious enteritis in western European hedgehogs (Erinaceus europaeus) in a rescue centre. Veterinary research communications, 2026.
Occurrence and Characteristics of Cut Injuries in Hedgehogs in Germany: A Collection of Individual Cases. Animals : an open access journal from MDPI, 2023.
Myiasis in European hedgehogs (Erinaceus europaeus). The veterinary quarterly, 2025.
Plastic Entanglement Poses a Potential Hazard to European Hedgehogs Erinaceus europaeus in Great Britain. Animals : an open access journal from MDPI, 2023.
Hearing and anatomy of the ear of the European hedgehog Erinaceus europaeus. Biology letters, 2026.