Dog Shaking for 2 Days: Causes, What to Monitor, and When to Seek Care

A dog that has been shaking for two days may have an ongoing condition that needs attention, and shaking that persists for more than a day generally warrants veterinary evaluation.

Quick Answer

Shaking that lasts for two days is different from a brief shiver that passes in minutes. When trembling or shivering continues for 48 hours, it can point to an underlying cause such as pain, an infection, a metabolic imbalance, a neurological condition, toxin exposure, or persistent anxiety. The duration itself is a useful clue: most short-lived shaking resolves once a trigger such as cold or fear is removed. Shaking that does not resolve over a full day or more is a reason to seek veterinary evaluation rather than continue waiting.

SYMPTOM TRIAGE: Shaking that has persisted for two days can stem from several causes and usually warrants veterinary evaluation. PawAI Lab Symptom Triage

What It Means When Shaking Lasts Two Days

Brief shaking is common in dogs and often has a simple explanation such as cold, excitement, or a moment of fear. Shaking that lasts for two days, however, suggests the trigger has not resolved or that an underlying condition is keeping it going.

The pattern of the shaking matters. It may be constant, or it may come and go in episodes throughout the 48 hours. A dog that shakes only during specific situations, such as car rides or storms, may have a stress-related cause. A dog that shakes regardless of setting is more likely to have a medical cause. In either case, two days is long enough that a veterinarian should assess the situation.

Separating observable signs from possible explanations

Observable signs: trembling or shivering that has lasted two days, changes in appetite or energy, panting, hiding, or restlessness
Possible explanations: pain, infection, fever, metabolic imbalance, neurological condition, toxin exposure, or persistent anxiety

Keeping what can be seen separate from what it might mean helps avoid assuming a single cause before a veterinarian evaluates the dog.

Possible Causes of Shaking That Lasts 48 Hours

Several conditions may keep a dog shaking for two days. The following are possible explanations rather than confirmed diagnoses.

Pain

Ongoing pain is a common reason for shaking that does not resolve. Sources can include injury, arthritis, spinal problems, dental disease, or abdominal discomfort. A dog in persistent pain may tremble, pant, resist movement, or seem restless. Because pain often does not improve without treatment, shaking linked to pain can continue for days.

Infection and fever

An infection can raise body temperature and cause shivering that lasts as long as the infection is present. Bacterial, viral, or tick-borne infections may all produce this pattern. Accompanying signs can include lethargy, reduced appetite, coughing, or nasal discharge. A fever that persists for two days is a reason to seek veterinary care.

Metabolic imbalances

Conditions such as low blood sugar, electrolyte disturbances, or hormonal disorders can cause persistent trembling. Small breeds and puppies are more prone to low blood sugar, while older dogs may develop endocrine conditions over time. These imbalances often require bloodwork to identify and may not resolve without treatment.

Neurological conditions

Some neurological issues cause ongoing or recurrent shaking. Tremor disorders, vestibular disease, inflammatory conditions, or seizure-related activity can produce trembling that lasts for days. Neurological signs may also include a head tilt, uncoordinated movement, circling, or changes in awareness. A veterinarian can assess whether a neurological cause is likely.

Toxin exposure

Ingestion of certain substances can lead to shaking that persists as long as the substance affects the body. Possible examples include chocolate, certain medications, tremorgenic molds, and some plants. Toxin exposure may also cause vomiting, drooling, weakness, or collapse. If ingestion is known or suspected, prompt veterinary care is recommended.

Persistent anxiety

In some cases, ongoing stress or anxiety can keep a dog shaking for days. This may occur after a frightening event or in a dog with separation anxiety. While anxiety-related shaking often eases with reassurance, it can persist in some dogs. If the shaking continues despite calming efforts, other causes should be considered.

What to Monitor at Home

If a dog has been shaking for two days, gathering details can help a veterinarian identify the cause.

Note exactly when the shaking started and whether it has been constant or episodic
Record whether anything makes the shaking better or worse
Check for additional signs such as vomiting, diarrhea, lethargy, or changes in appetite
Take the dog's rectal temperature if you have a pet thermometer and know how to use it
Observe whether the dog remains aware and responsive during episodes
Record a video of the shaking to show a veterinarian
Make sure the dog is warm, calm, and has access to water

Tracking these details over the two days gives a veterinarian a clearer picture of what may be happening.

When to Worry and Seek Prompt Care

Shaking that has lasted two days already meets the threshold for veterinary evaluation. Some situations require prompt or emergency attention. Seek care quickly if any of the following are present:

Known or suspected ingestion of a toxin
Collapse, inability to stand, or unresponsiveness
Seizure-like movements, stiffness, or loss of consciousness
Signs of pain such as crying, a tense abdomen, or refusal to move
Vomiting, diarrhea, or refusal to eat or drink
Difficulty breathing, pale gums, or a very high or low temperature
Disorientation, head tilt, circling, or unusual eye movements

Even without these additional signs, shaking that has persisted for two days warrants a veterinary visit, because the underlying cause is unlikely to resolve on its own.

Frequently Asked Questions

How long is too long for a dog to shake?

Brief shaking that lasts a few minutes is often normal. Shaking that persists for more than a few hours, or that comes and goes over more than a day, generally warrants veterinary attention. Two days of shaking is well beyond the typical duration for harmless causes and should be evaluated.

Should I wait another day to see if the shaking stops?

Waiting is not recommended when shaking has already lasted two days. Most short-lived causes, such as cold or brief fear, resolve within minutes to a few hours. Shaking that continues for 48 hours suggests an ongoing issue that is unlikely to resolve without evaluation. Contacting a veterinarian is the safest step.

Could the shaking be from anxiety if it has lasted two days?

Yes, persistent anxiety can sometimes keep a dog shaking for days, particularly after a frightening event. However, anxiety is a diagnosis best considered after medical causes have been ruled out. A veterinarian can help determine whether stress is the most likely explanation or whether testing is needed.

What will a veterinarian do to figure out the cause?

A veterinarian typically begins with a physical exam and a history of the signs. Depending on what they find, they may recommend bloodwork, temperature checks, neurological assessment, or imaging. The goal is to identify whether the shaking stems from pain, infection, a metabolic issue, a neurological condition, or another cause.

Next Steps

If your dog has been shaking for two days, the duration itself is a reason to seek veterinary evaluation. Start Symptom Triage to review the signs and get guidance on next steps.

Sources

Merck Veterinary Manual. "Tremors in Animals." merckvetmanual.com.
Cornell University College of Veterinary Medicine. "General Signs of Illness." vet.cornell.edu.
VCA Hospitals. "Tremors and Shaking in Dogs." vcahospitals.com.
American Veterinary Medical Association. "Signs Your Pet May Be Sick." avma.org.
Merck Veterinary Manual. "Pain Assessment and Management." merckvetmanual.com.

Disclaimer

This article is for informational purposes only and is not a substitute for professional veterinary advice, diagnosis, or treatment. PawAI Lab does not diagnose conditions and cannot confirm the cause of any sign described here. Always seek the guidance of a licensed veterinarian with any questions about your dog's health, and contact a veterinarian or an emergency clinic promptly if you are concerned about serious signs.