Watching your dog shake or tremble can be deeply unsettling, especially when you're not sure what's causing it. As a caring owner, you naturally want to understand whether this behaviour is normal or a sign that something's wrong. The truth is, dogs shake for many different reasons, ranging from perfectly harmless excitement to serious medical emergencies that require immediate attention.
Understanding the difference between normal trembling and concerning shaking can help you make informed decisions about your dog's care. Some dogs naturally shake more than others, particularly smaller breeds, whilst others only tremble in specific situations. The key is knowing what's normal for your individual dog and recognising when changes occur.
By learning about the various causes of shaking and when to seek help, you'll be better equipped to support your dog's wellbeing and know when professional veterinary care is needed.
Normal Reasons Dogs Shake
Excitement and Happy Emotions
Many dogs shake when they're excited, and this is completely normal behaviour. You might notice your dog trembling when you come home from work, before meal times, or when they spot their favourite toy or lead. Excitement-related shaking typically comes with other happy signs like tail wagging, relaxed facial expressions, and eager body language.
This type of trembling usually stops once the exciting moment passes. If your dog settles down quickly and shows no other concerning symptoms, excitement is likely the cause. Some dogs are simply more expressive than others when it comes to showing their emotions.
Feeling Cold
Shivering is your dog's natural way of generating body heat when they're cold. Just like humans, dogs shake to warm themselves up when temperatures drop. Certain dogs are more susceptible to cold-induced shaking, including small breeds, elderly dogs, puppies, dogs with thin or short coats, and underweight dogs.
If your dog stops shaking once they're back in a warm environment, cold is almost certainly the cause. During winter months or in air-conditioned spaces, keep an eye on dogs who are particularly sensitive to temperature changes.
Breed Characteristics
Some breeds, especially smaller dogs like Chihuahuas, naturally tremble more due to their size and temperament. This isn't necessarily a problem, it's simply part of their normal behaviour pattern. Getting to know your dog's individual tendencies helps you distinguish between their usual shaking and something that might be cause for concern.
Concerning Causes That Need Attention
Pain and Joint Problems
Trembling can be a sign that your dog is experiencing pain, particularly in older dogs with arthritis or joint issues. Pain-related shaking often comes with other telltale signs that something isn't right.
Watch for reluctance to move or exercise, tensing when you approach certain areas of their body, changes in walking patterns, or reduced appetite. Your dog might also vocalise when moving or being touched, show tense facial expressions, or seem generally less comfortable than usual.
Age-related tremors in the hind legs are common in senior dogs due to muscle weakness, though these typically don't interfere with normal movement. However, any new trembling in older dogs should be evaluated by your vet to distinguish between normal age-related changes and discomfort that could be managed.
Signs that may accompany discomfort-related shaking
Subtle Changes
Slight reluctance to jump, slower on walks, occasional stiffness after rest
Noticeable Discomfort
Clear hesitation with movement, visible tension when touched, changes in posture
Significant Impact
Obvious reluctance to move, vocalising with movement, loss of appetite, persistent trembling
Anxiety and Stress
Fear, anxiety, and stress commonly cause dogs to shake. Common triggers include thunderstorms, fireworks, vet visits, separation anxiety, unfamiliar people or environments, and loud noises. Stressed dogs often display other signs alongside trembling, such as wide or squinty eyes, panting, ears held back, tail tucking, or attempts to hide.
Understanding your dog's stress triggers can help you provide better support and potentially prevent anxiety-related shaking. Some dogs are naturally more anxious than others, and early intervention when you notice stress signs can prevent escalation.
Nausea and Digestive Issues
Dogs experiencing nausea may shake alongside other symptoms like listlessness, lip smacking, excessive swallowing or drooling, hiding behaviour, yawning, or vomiting. Nausea can result from motion sickness, medication side effects, eating something they shouldn't have, or underlying conditions affecting the kidneys or liver.
If your dog seems unwell and is shaking, particularly if they're also showing signs of stomach upset, it's worth contacting your vet for guidance. For more information about digestive issues, you might find our guide on why dogs throw up helpful.
Serious Medical Conditions
Neurological Disorders
Several neurological conditions can cause trembling in dogs. Epilepsy may present as temporary tremors rather than full convulsions, with symptoms including collapsing, jerking, stiffening, muscle twitching, loss of consciousness, drooling, or foaming at the mouth.
Generalised Tremor Syndrome, also called white shaker dog syndrome, typically affects dogs between 9 months and 2 years of age. Whilst first noticed in small white breeds like Maltese and West Highland White Terriers, it can occur in any dog regardless of size, breed, or colour. If you notice persistent trembling in your dog, speak to your vet for proper evaluation.
Metabolic Problems
Low blood sugar (hypoglycaemia) is most common in young and small-breed dogs and can cause shaking, trembling, or seizures. This condition requires immediate veterinary attention as it can be life-threatening if left untreated.
Other metabolic issues that can cause trembling include electrolyte imbalances, kidney disease, parathyroid disorders, and Addison's disease. These conditions affect your dog's internal chemistry and require professional diagnosis and treatment.
Emergency Situations
Toxin Exposure
Poisoning represents a veterinary emergency requiring immediate attention. Common household items that can cause trembling include chocolate, xylitol (found in sugar-free products), cigarettes, snail baits, coffee, rodent poison, and certain plants.
Poisoning symptoms may include tremors, weakness, disorientation, depression, drooling, vomiting, diarrhoea, and seizures. If you suspect your dog has ingested something toxic, contact your vet or an emergency clinic immediately, even if symptoms haven't appeared yet.
Infectious Diseases
Canine distemper is a viral infection that most commonly affects unvaccinated puppies and young dogs. Trembling may be accompanied by eye and nose discharge, fever, and coughing. Distemper can be fatal but is preventable through proper vaccination, which is why keeping up with your dog's vaccination schedule is so important.
When to Seek Veterinary Care
Emergency Situations
Contact an emergency veterinary clinic immediately if your dog experiences sudden, severe shaking with no apparent cause, trembling with collapse or inability to stand, shaking accompanied by vomiting or breathing difficulties, or if you suspect toxin ingestion.
Other emergency signs include pale gums alongside trembling, seizures lasting longer than 2-3 minutes, any first-time seizure, persistent shaking continuing for more than a few minutes, or trembling with confusion or disorientation.
Routine Veterinary Consultation
Schedule an appointment with your regular vet for new or worsening trembling in senior dogs, mild occasional shaking that doesn't resolve, trembling accompanied by changes in appetite or behaviour, or any shaking you cannot explain.
It's always better to err on the side of caution when it comes to your dog's health. Your vet can help determine whether the shaking is normal for your dog or requires further investigation.
Managing Shaking at Home
Anxiety-Related Trembling
For anxiety-related shaking, early intervention works best. Watch for early stress signs like yawning, lip licking, or pulled-back ears, and gently remove your dog from the stressful situation when possible. Creating positive associations with safe spaces using treats and toys can provide your dog with a retreat when they feel overwhelmed.
Distraction techniques using long-lasting treats, puzzle toys, and gentle petting can help calm anxious dogs. Maintaining predictable routines for walking, feeding, and sleeping also helps reduce overall stress levels.
Cold-Related Shaking
If your dog is shaking from cold, bring them inside immediately and ensure they're warm and comfortable. Consider appropriate clothing for small or thin-coated breeds during cold weather, and limit outdoor exposure time in harsh conditions.
Supporting Joint Health
For dogs whose shaking may be related to joint discomfort, maintaining a healthy weight, providing comfortable bedding, and gentle exercise can help support overall mobility. Many owners find that MedPaw's hip and joint supplement containing ingredients like glucosamine, chondroitin, and green-lipped mussel can support their dog's joint health alongside veterinary care, though these should complement rather than replace professional treatment for diagnosed conditions.
If you notice your dog showing signs of stiffness or mobility changes alongside trembling, our guide on why dogs become stiff and slow down provides additional insights into age-related changes.
Prevention and Monitoring
Regular veterinary check-ups help identify underlying conditions that might cause trembling before they become serious problems. Keeping up with vaccinations prevents infectious diseases like distemper, whilst maintaining a safe environment reduces the risk of toxin exposure.
Monitor your dog's normal behaviour patterns so you can quickly identify when shaking represents a change from their usual behaviour. Keeping a record of trembling episodes, noting triggers, duration, and accompanying symptoms, can help your vet make an accurate diagnosis if problems develop.
Understanding your individual dog's personality and normal responses helps you become their best advocate. Some dogs are naturally more expressive or sensitive than others, and knowing what's typical for your dog makes it easier to spot when something genuinely needs attention. If you notice trembling alongside other mobility issues such as back end weakness or balance problems, these could indicate underlying joint or neurological concerns that warrant veterinary evaluation.
Is it normal for my dog to shake when excited or should I be worried?
Excitement-related shaking is completely normal behaviour in many dogs. You'll typically see this trembling alongside other happy signs like tail wagging and eager body language when you come home or before meals. If your dog settles down quickly after the exciting moment passes and shows no other concerning symptoms, this type of shaking is nothing to worry about.
When should I take my dog to the vet for shaking or trembling?
Contact your vet immediately if your dog experiences sudden severe shaking with no apparent cause, trembling with collapse, or shaking alongside vomiting or breathing difficulties. You should also seek routine veterinary care for new trembling in senior dogs, persistent shaking that doesn't resolve, or any trembling you cannot explain. It's always better to err on the side of caution with your dog's health.
Could my older dog's shaking be related to joint problems?
Trembling can indeed be a sign of discomfort in older dogs, particularly those with joint issues. Watch for other signs like reluctance to move, changes in walking patterns, or tensing when touched. Age-related tremors in the hind legs are common due to muscle weakness, but any new trembling in senior dogs should be evaluated by your vet to determine the cause.
What should I do if my dog is shaking from anxiety or stress?
For anxiety-related shaking, try to gently remove your dog from the stressful situation when possible and watch for early stress signs like yawning or pulled-back ears. Create positive associations with safe spaces using treats and toys, and maintain predictable routines for walking and feeding. If anxiety-related trembling persists or worsens, speak to your vet about management strategies.
Can joint supplements help if my dog's shaking is related to joint discomfort?
Daily joint supplements containing ingredients like glucosamine, chondroitin, and green-lipped mussel may help support your dog's joint health and mobility alongside veterinary care. However, these supplements should complement rather than replace professional treatment for diagnosed conditions. Always speak to your vet first to determine the underlying cause of your dog's shaking and the most appropriate care plan.
