Why Is My Dog Shaking? 7 Signs to Watch Out For

If you’ve ever asked yourself, “Why is my dog shaking?” you’re not alone.

Most of the time, it’s nothing to worry about, but occasionally, shaking can signal pain, stress, or a more serious medical condition.

Read on for more information about why dogs shake, when it’s harmless, and when you may need to contact your veterinarian.

1. Excitement or Anticipation

Some dogs get so excited when they see their humans that they shake or tremble. This type of shaking is short lived and typically expected as the ‘norm’ for your pooch.

What to do: If your dog’s shaking is clearly connected to excitement and goes away quickly, there’s no cause for concern at all. Help your pup settle down with calming routines and training if the excitement is too much to handle.

2. Anxiety or Fear

Some dogs may shake when they’re scared or anxious. Common triggers are thunderstorms, fireworks, vet visits, or separation anxiety. You may also notice pacing, drooling, panting, hiding, or whining.

What to do: Minimize your dog’s unique stressors whenever possible. Create a safe space for them to go to, use calming tools like anxiety wraps or white noise and wait it out. Talk to your vet about behavior training so your dog’s life is easier.

3. Cold or Temperature Sensitivity

Just like humans, dogs can shiver or shake when they’re cold. Small breeds, dogs with thin coats, and puppies are especially prone to trembling when they’re cold. Wet weather or air-conditioner spaces contribute to temperature-related shaking as well.

What to do: Keep your dog warm and dry with a cozy bed, sweaters for dogs, or blankets. If the shaking continues even when your dog is warm and comfy, it may mean something more than just being chilly.

4. Pain or Injury

Shaking can also be a sign that your dog is in pain. Even if they’re not limping or crying out, trembling may be a subtle response to discomfort from an injury, joint issue, or underlying medical condition. If no other cause is obvious, it’s important to consider pain as a possible factor.

What to do: If your dog is shaking and showing signs of pain or behavior changes, schedule a veterinary visit. Identifying and treating the source of discomfort is key to helping your dog feel better.

5. Nausea or Digestive Upset

Dogs sometimes shake when they feel nauseous or have an upset stomach. This could be caused by motion sickness, allergies,eating something that didn’t agree with them (like rich human food), or sudden changes in diet.

What to do: Monitor your dog’s symptoms and avoid giving them unfamiliar foods or treats. If vomiting or diarrhea occurs, or if the shaking doesn’t stop, call your vet to rule out serious gastrointestinal issues or potential poisoning.

6. Exposure to Toxins

If your dog suddenly starts shaking with no clear cause, it could be a reaction to something toxic. Common causes include chocolate, grapes, xylitol (found in sugar-free gum), human medications, or certain household cleaners. Symptoms of poisoning may also include vomiting, tremors, disorientation, and collapse.

What to do: If you suspect your dog has eaten something toxic, contact your vet or an emergency clinic immediately. Quick action can be life-saving.

7. Underlying Medical Conditions

Persistent or unexplained shaking may be linked to chronic health issues such as:

• Generalized Tremor Syndrome (GTS), often seen in smaller breeds
• Neurological disorders or seizures
• Low blood sugar, particularly in puppies or diabetic dogs
• Liver or kidney disease affecting nervous system function

What to do: If the shaking is frequent, increases in severity, or comes with other symptoms like lethargy or unsteadiness, your vet may recommend blood work, imaging, or additional diagnostics to get to the root of the issue.

When to Call the Vet

Some shaking is harmless. But when it’s paired with other symptoms or comes on suddenly, it’s best to err on the side of caution. Contact your vet if:

• The shaking is severe or doesn’t stop
• It’s accompanied by vomiting, diarrhea, or trouble walking
• Your dog appears to be in pain or distress
• You suspect exposure to a toxin or harmful substance
• The shaking occurs frequently without a clear cause

At Westmonte Animal Clinic, we’re here to help you figure out what’s going on. Our experienced team can evaluate your dog’s symptoms and provide clear, compassionate care to help your pet feel like themselves again.

Trust Your Instincts as a Pet Parent

Seeing your dog shaking can be scary, especially if it’s out of the norm for them. Sometimes it’s just part of being an excited pup. Other times it’s a way of your dog communicating that something isn’t quite right.

If you’re unsure whether your dog’s shaking is normal or something more serious, don’t wait. The sooner you get answers, the sooner your dog can get the care they need.

Have questions or need to schedule an appointment? Westmonte Animal Clinic is just a call away. We’re committed to keeping your pets happy, healthy, and safe—no matter what’s got their tail trembling.