Why Is My Dog Drinking a Lot When Breathing? What It Means
Learn why a direct link between breathing changes and increased drinking in dogs is uncommon, how both signs can sometimes point to the same underlying illness, and when to contact a veterinarian.
Quick Answer
Breathing changes and increased drinking do not usually have a direct cause-and-effect relationship in dogs. However, both can arise from the same underlying illness, such as heart disease, kidney disease, fever, or a respiratory infection that leads to dehydration. If your dog is breathing rapidly or with effort and also drinking more than usual, contact a veterinarian, because some causes can progress quickly.
SYMPTOM TRIAGE: If your dog is breathing differently and drinking more at the same time, a guided assessment can help you decide how urgently to act. Use our guided tool at PawAI Lab Symptom Triage.
Understanding the Link Between Breathing and Drinking
It is important to be honest: a direct connection between a change in breathing and increased drinking is uncommon. In many cases, the two signs are coincidental. A dog might breathe faster because of excitement, heat, or stress, and drink more at the same time for unrelated reasons.
However, there are situations in which both signs stem from the same systemic problem. When the body is dealing with an illness that affects multiple organs, breathing and drinking can both change as secondary effects. A veterinarian can help determine whether the two are related.
Some patterns that may suggest the signs are connected:
- Labored or rapid breathing that is present even when the dog is resting
- Increased drinking that is persistent rather than tied to a single event
- Both signs appearing around the same time or worsening together
- Additional signs such as coughing, lethargy, appetite loss, or exercise intolerance
Conditions That Can Affect Both Breathing and Drinking
Several conditions can produce both respiratory signs and increased thirst, though the link is usually indirect. Only a veterinarian can identify the underlying cause.
- Heart disease: A dog with heart disease may breathe faster or with more effort, especially after mild activity or when resting. Some heart medications, particularly diuretics, increase urination and can drive compensatory thirst.
- Kidney disease: The kidneys' reduced ability to concentrate urine leads to increased water loss and drinking. In advanced stages, toxin buildup can affect breathing and overall comfort.
- Fever and infection: A fever raises the body's metabolic demands, increases breathing rate, and can lead to dehydration that drives thirst. Respiratory infections, in particular, can cause both labored breathing and increased fluid needs.
- Cushing's disease (hyperadrenocorticism): Excess cortisol can increase thirst and urination and may also cause panting, especially at night. The two signs together can sometimes point in this direction.
- Respiratory conditions: Conditions affecting the airways or lungs can change breathing patterns. If breathing becomes labored, the dog may lose more moisture through the airway, which can increase thirst modestly.
- Pain or anxiety: Stress and pain can increase panting and, in some dogs, may lead to changes in drinking behavior. This is usually situational rather than persistent.
What to Monitor at Home
While you arrange a veterinary assessment, tracking a few details can give your veterinarian useful information:
- Your dog's resting breathing rate (count breaths for 15 seconds when the dog is calm and multiply by four)
- Whether the breathing change involves effort, coughing, wheezing, or open-mouth breathing at rest
- How much water your dog drinks in 24 hours, measured with a known-volume bowl
- Any change in urination, appetite, weight, or energy
- Whether the dog takes heart or kidney medications, and any recent dose changes
- When the changes began and whether they have worsened
A resting breathing rate above roughly 30 breaths per minute in a calm dog may be above the typical range, though individual variation exists. A veterinarian can advise whether the number is concerning for your dog.
What to Do While Arranging Care
You do not need to restrict water access. If an underlying condition is causing dehydration or fluid loss, withholding water can make things worse. Instead:
- Keep fresh water available at all times
- Offer water in a measured bowl so you can track intake
- Keep your dog calm and avoid strenuous exercise or heat exposure
- Note any medications and their dosing schedule
- Do not attempt home remedies or give any human or unprescribed medications
When to Contact a Veterinarian
Contact a veterinarian promptly if breathing changes or combined breathing and drinking changes are accompanied by any of the following:
- Breathing that is labored, very rapid, or does not settle when the dog is resting
- Blue, pale, or very dark gums or tongue
- Collapse, severe weakness, or inability to stand
- Coughing that is persistent or produces fluid
- Repeated vomiting, diarrhea, or refusal to eat
- Swelling of the abdomen or limbs
If your dog's breathing seems normal when resting and the drinking increase is mild and recent, a non-urgent appointment within a few days is reasonable while you gather intake and breathing-rate measurements. When in doubt, it is appropriate to call a veterinary clinic and describe what you are seeing.
Frequently Asked Questions
Can breathing problems cause a dog to drink more water?
Not directly in most cases. However, labored or rapid breathing can lead to some additional moisture loss through the airway, which may modestly increase thirst. More often, both signs arise from a shared underlying condition such as heart disease, kidney disease, fever, or infection, rather than one causing the other.
What is a normal resting breathing rate for a dog?
A typical resting breathing rate for an adult dog is roughly 10 to 30 breaths per minute, though this varies with size, breed, and temperature. A consistently elevated resting rate, especially above 30 to 40 breaths per minute in a calm, cool environment, may warrant a veterinary check. Your veterinarian can advise on a normal range for your dog.
Could my dog be drinking more because of heart medication?
Yes. Diuretics, which are commonly prescribed for heart disease, increase urination and can lead to compensatory thirst. If your dog takes heart medication and you notice a new or worsening increase in drinking, contact the prescribing veterinarian. Do not adjust or stop any medication without professional guidance.
Should I be worried if my dog pants and drinks more only when excited or hot?
Panting and drinking in response to excitement, exercise, or warm weather is usually normal and not a cause for concern. What may warrant attention is panting or drinking that persists at rest, seems out of proportion to the situation, or appears alongside other signs such as coughing, lethargy, or appetite loss.
Sources
- Cornell Richard P. Riney Canine Health Center. "Increased Thirst and Urination in Dogs." Cornell University College of Veterinary Medicine.
- American Animal Hospital Association (AAHA). "Heart Disease in Dogs."
- VCA Animal Hospitals. "Polydipsia (Increased Drinking) and Dyspnea (Difficulty Breathing) in Dogs."
- Merck Veterinary Manual. "Polyuria and Polydipsia in Animals" and "Respiratory Diseases in Dogs."
Disclaimer
This article is provided for general informational purposes only and does not constitute veterinary advice, diagnosis, or treatment. It is not a substitute for professional veterinary care. Always consult a licensed veterinarian regarding your dog's specific condition, especially if symptoms are severe, progressing, or persistent.