A dog shaking and having kidney disease can be concerning, particularly when the shaking is new or occurs alongside changes in appetite, drinking, urination, energy, or behavior.
Kidney disease does not typically cause shaking in every affected dog, especially during the earlier stages. However, advanced kidney dysfunction can lead to metabolic disturbances and the buildup of waste products that affect the nervous and muscular systems.
Shaking can also have many causes that are unrelated to the kidneys. Pain, anxiety, low blood sugar, temperature changes, neurological disease, toxin exposure, and other metabolic problems can all cause tremors.
Because of this, shaking alone cannot establish that kidney disease is getting worse or that the kidneys are responsible.
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Dog Shaking and Kidney Disease: What It Means
A dog with kidney disease may shake or tremble when the condition becomes more advanced or causes significant changes in the body’s normal balance.
Reduced kidney function can allow waste products to build up in the bloodstream and can also lead to dehydration or changes in electrolytes, which may contribute to weakness, muscle tremors, or shaking.
Nausea and general discomfort associated with kidney disease can also make a dog appear restless or trembly.
However, shaking is not specific to kidney disease. Pain, low blood sugar, fever, anxiety, medication effects, or other illnesses can cause similar signs.
Dog Shaking and Kidney Disease: Common Causes
Advanced Kidney Disease and Uremia
In advanced kidney disease, the kidneys may no longer remove waste products effectively.
These substances can accumulate in the bloodstream, producing a condition called uremia.
Dogs with severe kidney dysfunction may develop vomiting, loss of appetite, dehydration, lethargy, weight loss, mouth sores, and other systemic abnormalities.
A severely unwell dog may appear weak, uncomfortable, or trembly. However, shaking itself is not specific enough to confirm uremia.
Related: Dog Diarrhea and Kidney Disease (What you should know)
Electrolyte and Metabolic Abnormalities
The kidneys play an important role in maintaining the body’s fluid and electrolyte balance.
Significant kidney dysfunction can therefore be accompanied by metabolic abnormalities that affect muscles and nerves.
For example, abnormal calcium levels can cause neuromuscular signs, including tremors or muscle twitching.
Hypoparathyroidism is one example of a disorder associated with low calcium and tremors, although it is not simply a consequence of ordinary chronic kidney disease.
Blood testing is needed to determine whether an electrolyte or metabolic abnormality is contributing to the shaking.
Dehydration and Weakness
Kidney disease can cause dogs to produce larger amounts of dilute urine, particularly as chronic kidney disease progresses.
Increased water loss can contribute to dehydration if the dog cannot drink enough to compensate.
A dehydrated or severely weak dog may appear shaky or unsteady. Dehydration can also worsen other medical problems and should be assessed by a veterinarian when it is significant.
Low Blood Sugar or Other Metabolic Problems
Shaking can occur with low blood sugar and other metabolic disturbances. These problems can develop for numerous reasons and should not automatically be attributed to kidney disease.
If a dog with kidney disease suddenly develops tremors, blood glucose and other blood chemistry values can help determine whether another metabolic problem is contributing.
Related: Old Dog Kidney Failure (Signs, stages and causes)
Pain or Physical Discomfort
Pain is another common reason a dog may shake. A dog with kidney disease can also develop unrelated painful conditions, such as arthritis, dental disease, abdominal problems, or an injury.
Therefore, shaking in a dog with kidney disease does not necessarily mean the kidneys themselves are causing the discomfort.
Nausea and Gastrointestinal Illness
Advanced kidney disease can cause nausea and vomiting as waste products accumulate. Dogs may become reluctant to eat, lose weight, become dehydrated, or appear generally unwell.
A dog experiencing significant nausea or abdominal discomfort may appear restless or trembly.
Vomiting can also worsen dehydration and electrolyte disturbances.
Neurological Complications
Tremors are recognized as a sign of nervous-system dysfunction in dogs, along with seizures, weakness, changes in coordination, and altered behavior.
Severe systemic illness, metabolic abnormalities, toxins, and primary neurological disorders can all produce tremors.
If shaking is accompanied by changes in walking, awareness, vision, balance, or seizures, a broader neurological evaluation may be necessary.
Medication Effects
Dogs with kidney disease may receive several medications, and some drugs can produce weakness, gastrointestinal effects, or other adverse reactions.
Medication effects should therefore be considered when shaking begins after a new medication or a change in treatment.
A dog owner should not stop or change prescribed medication without discussing it with the veterinarian treating the dog.
A Separate Problem Unrelated to Kidney Disease
A dog with kidney disease can still develop ordinary causes of shaking. Anxiety, fear, excitement, cold temperatures, pain, muscle fatigue, and other illnesses can all cause temporary or persistent shaking.
This is why the timing of the shaking and the presence of other symptoms are important when determining whether the kidneys are actually involved.
Related: Dog shaking panting and kidney disease (What it means)
Dog Shaking and Kidney Disease but Still Eating
A dog can have kidney disease and continue eating, particularly in the earlier stages. Chronic kidney disease can progress for some time before obvious illness develops, and appetite loss is more commonly associated with more advanced disease.
If a dog is eating normally but has occasional mild shaking, kidney disease is not necessarily the explanation. Other causes such as anxiety, cold, pain, or another medical condition may be more relevant.
Persistent or worsening shaking still deserves veterinary assessment, particularly when kidney disease is already known.
Dog Shaking and Kidney Disease but Acting Normal
A dog with kidney disease may appear normal during earlier stages, and mild intermittent shaking may have nothing to do with the kidneys.
However, acting normally does not rule out changes in kidney function. Kidney disease is assessed through blood and urine testing rather than behavior alone.
If the shaking is new or recurring, the veterinarian may want to determine whether kidney values, electrolytes, hydration, blood pressure, or another aspect of the dog’s health has changed.
Dog Shaking and Kidney Disease With Vomiting
Shaking combined with vomiting is more concerning than mild shaking alone. Advanced kidney disease can cause vomiting when waste products accumulate in the bloodstream.
Repeated vomiting can also cause dehydration and electrolyte disturbances, potentially making weakness or shaking worse.
A dog with known kidney disease that begins vomiting repeatedly, becomes increasingly weak, or cannot keep water down should be evaluated promptly.
Dog Shaking and Kidney Disease With Increased Thirst and Urination
Increased thirst and urination are common signs associated with progressing chronic kidney disease because the kidneys may lose some of their ability to concentrate urine.
These signs do not explain shaking by themselves. However, when increased drinking and urination occur alongside shaking, the veterinarian may want to reassess kidney function, hydration, electrolytes, and other metabolic measurements.
Dog Shaking and Kidney Disease With Lethargy
Lethargy alongside shaking may indicate that the dog is becoming more systemically unwell. Advanced kidney disease can cause depression, poor appetite, dehydration, vomiting, and weight loss.
Other conditions, including infection, anemia, pain, neurological disease, and metabolic disorders, can produce the same combination.
A noticeable decline in energy in a dog already diagnosed with kidney disease is therefore worth reporting to the veterinarian.
Dog Shaking and Kidney Disease With Tremors or Muscle Twitching
There is an important distinction between occasional shivering and true tremors. Tremors are involuntary rhythmic or irregular muscle movements and can result from nervous-system disorders, metabolic problems, toxins, and other conditions.
If the movement is persistent, occurs while the dog is resting, spreads to different parts of the body, or is accompanied by weakness, abnormal coordination, confusion, or seizures, veterinary assessment is particularly important.
When to Call or Visit the Vet
Contact your veterinarian if a dog with known or suspected kidney disease develops:
New or persistent shaking
Increasing frequency or severity of tremors
Loss of appetite or refusal to eat
Repeated vomiting
Significant lethargy or weakness
Weight loss
Increased thirst or urination
Dehydration
Mouth sores or significant bad breath
Changes in urination
Difficulty walking or maintaining balance
Muscle twitching or unusual movements
Confusion or changes in awareness
Seizure-like activity
A sudden change in behavior or overall condition
Immediate veterinary attention is particularly important if shaking is severe or accompanied by seizures, collapse, marked weakness, difficulty walking, repeated vomiting, inability to keep water down, significant changes in awareness, or other rapidly worsening symptoms.
Dog Shaking and Kidney Disease: Treatment
Treatment depends on whether the shaking is actually related to kidney disease and what complication or separate condition is responsible.
The veterinarian may review the dog’s kidney history and medications and perform a physical examination, followed by blood and urine testing to evaluate kidney function, hydration, blood glucose, electrolytes, and other abnormalities.
Blood pressure measurement and imaging may also be appropriate depending on the findings.
If advanced kidney disease or a metabolic complication is identified, treatment is directed at the kidney condition and its complications.
If the shaking has another cause, such as pain, neurological disease, toxin exposure, or another metabolic disorder, treatment is directed toward that diagnosis instead.
Key Takeaway
A dog with kidney disease may develop shaking, particularly when kidney dysfunction becomes advanced enough to cause significant metabolic changes, dehydration, uremia, or other complications.
However, shaking is not a typical sign of every stage of kidney disease, and a dog with kidney disease can shake for an entirely unrelated reason.
The combination becomes more concerning when shaking occurs with vomiting, appetite loss, marked lethargy, dehydration, weakness, abnormal movements, confusion, or other neurological changes.
Advanced kidney disease can cause significant systemic illness, while other metabolic or neurological conditions can produce similar signs.
If a dog with known kidney disease develops new shaking, veterinary testing can help determine whether kidney function has changed or whether another problem is responsible. Blood and urine tests are often important because the appearance of the shaking alone cannot identify its cause.