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Heart Murmur in Dogs: A Veterinarian’s Guide

Dr. Julie Buzby January 12, 2026 34 Comments

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A heart murmur in dogs is a symptom, not a diagnosis, and can have different causes with varied outlooks. Some are harmless, but others can be very serious. Integrative veterinarian Dr. Julie Buzby equips you with information about the causes, symptoms, diagnosis, and treatment for heart murmurs in dogs.

Tiny Chihuahua dog laying down on a fluffy mat

Every time I do a physical exam on one of my patients, I always listen carefully to his or her heart and lungs. It’s an important part of the check-up, and one of the reasons I believe wellness exams are a critical part of protecting your dog’s health. I hope that when I am done listening, I can smile and say, “Everything sounds great!”

But I would also much rather find a heart murmur while your dog is still feeling and acting totally normal. This way, we can take a proactive approach to finding the reason for the murmur and determining the best course of action. Without that wellness exam, a heart murmur could easily go undiagnosed until it starts causing some serious problems. By then, more damage is done, and we are playing catch-up.

Table Of Contents
  1. What is a heart murmur in dogs?
  2. Heart anatomy
  3. What does a heart murmur mean?
  4. How are heart murmurs in dogs graded?
  5. What causes heart murmurs in dogs?
  6. What are the symptoms of a heart murmur?
  7. How are heart murmurs diagnosed?
  8. What is the treatment for heart murmurs in dogs?
  9. Prognosis for heart murmurs in dogs
  10. Dog heart murmur FAQ
  11. The "heart" of heart murmurs in dogs

What is a heart murmur in dogs?

A heart murmur is an abnormal sound that can be heard when listening to the heart using a stethoscope. The murmur itself is not a diagnosis, but it does give us a clue that something may be going on. Some heart murmurs are caused by heart diseases, and others are less worrisome.

What does a heart murmur in a dog sound like?

Normally, when listening to your dog’s heart with a stethoscope, your vet would hear a crisp “lub-dub” sound. However, sometimes he or she may hear a “whoosh” superimposed over the beat. This abnormal heart sound is called a murmur.

Heart anatomy

To understand heart murmurs in dogs, you need to know a bit about the structures in the heart. There are four chambers that make up the heart—the right atrium, the right ventricle, the left atrium, and the left ventricle.

A diagram showing the anatomy of the different heart valves and vessels

To keep the chambers separated, small heart valves open and close as each chamber pumps and fills with blood. Pressure gradients in the heart work with the valves to keep blood flowing in the correct direction.

Blood enters the right atrium, then passes through the tricuspid valve and into the right ventricle. The right ventricle then pumps the blood through the pulmonic valve and into the main pulmonary artery, which leads to the lungs. As blood flows through the lungs, it picks up oxygen.

Oxygenated blood then flows from the pulmonary veins into the left atrium, then on to the left ventricle via the mitral valve. Finally, the left ventricle pumps the blood through the aortic valve and into the aorta. This large artery sends blood to the rest of the body.

What does a heart murmur mean?

The sound of the murmur comes from turbulent blood flow within the heart. The heart’s valves are supposed to ensure unidirectional blood flow. To cause a heart murmur, blood may be flowing backwards through a leaky valve, being forced through a narrowed valve, or moving through an abnormal hole or vessel connection in the heart. Or sometimes the blood is thin and watery, which changes the flow dynamics.

With many potential underlying causes, it’s very important to try to find out what may be going on anytime a new murmur is found.

How are heart murmurs in dogs graded?

In order to describe the severity of a heart murmur, we use a numerical grading system. One method of classification involves grading the intensity or loudness of the murmur on a scale from one to six.

The following chart defines heart murmur grades in dogs:

Grade IVery faint, requires careful listening in a quiet room
Grade IISoft but consistent
Grade IIIModerate in intensity and easier to hear
Grade IVLoud but no palpable thrill (vibration of the chest wall caused by turbulent blood flow)
Grade VLoud with palpable thrill
Grade VILoud enough to be heard with stethoscope off chest wall, palpable thrill

Your vet will also classify the murmur based on its location. For example, a dog might have a left-sided murmur that is loudest over the location of the mitral valve. Knowing over which area the murmur is loudest may help pinpoint which valve or structure is problematic.

A murmur may also be described based on when it occurs. Sometimes the “whoosh” noise is heard on the “lub” of the heartbeat, sometimes on the “dub,” and sometimes both.

Systolic murmurs are the most common and occur when the heart is contracting. Alternatively, a diastolic murmur is heard while the heart is relaxed and filling. Other murmurs are classified as being continuous, meaning they are heard constantly.

A veterinarian listening to a dog's heart for a murmur
Murmurs are classified by intensity and location.

What causes heart murmurs in dogs?

Because a murmur is simply auditory proof of turbulent blood flow somewhere in the heart, many aspects of heart disease in dogs can be accompanied by a murmur. Some are more concerning than others.

Innocent murmurs

In young puppies, a heart murmur could be physiologic (a result of normal processes in the heart). In these cases, the murmur occurs because the pup is growing rapidly, especially in large breeds. This type of murmur is also known as an innocent murmur since it is not usually a sign of a problem. It typically goes away on its own after a few weeks.

If your vet suspects your puppy may have an innocent murmur, he or she will check for the murmur again at the next visit. If it’s still present, then it may not actually be an innocent murmur. At that point, your vet will probably recommend further diagnostics.

Small Yorkie puppy on a colorful rug
Some puppies may be born with innocent murmurs that go away as they get older.

Anxiety-related murmurs

Sometimes, stressed or anxious dogs may develop a heart murmur. This is usually because the heart is pumping very quickly. Like with physiologic murmurs, they eventually go away on their own. If your dog finds trips to the vet stressful, ask your veterinary team for tips to help relieve fear and anxiety. Your vet can also prescribe anxiety-reducing medications like gabapentin for dogs to help your dog feel less nervous about a vet visit.

Anemia or low protein

Underlying illnesses can cause a heart murmur even when there is no evidence of primary heart disease. When dogs are suffering from anemia (low red blood cell numbers) or have low protein in their blood, the consistency of the blood changes. This creates a functional murmur. Once your vet treats the underlying disease, the murmur usually resolves on its own.

Heart disease

When true heart problems are present, murmurs will develop due to structural damage to the heart muscle or the valves. Heart disease in dogs may be congenital (present from birth), inherited (genetically linked), or acquired.

Heart disease in puppies

Heart murmurs in puppies are sometimes due to congenital heart defects. Inherited conditions that may cause heart murmurs include:

  • Patent ductus arteriosus (PDA) in dogs: An abnormal connection between the aorta and the pulmonary artery. During fetal development, the ductus arteriosus allows blood to bypass the lungs since they are not yet functional. The ductus arteriosus should close at birth. If it does not close, blood flows directly from the aorta into the pulmonary artery, creating a murmur that is heard continuously.
  • Pulmonic stenosis: Narrowing of the pulmonic valve, causing the heart to work harder and exert more pressure to push the blood through the opening. To understand how this creates turbulent blood flow, think about what happens to the water coming out of a garden hose if you close part of the opening with your thumb.
  • Subaortic stenosis: Narrowing at the base of the aortic valve, causing the heart to work harder and exert more pressure to push the blood through the opening. The garden hose analogy applies here, too.
  • Ventricular septal defects: A hole in the wall separating the right and left ventricles. This allows blood to flow freely between the ventricles as the heart pumps. This turbulent blood flow is responsible for the abnormal sound heard in dogs with VSD.

Heart disease in adult or senior dogs

Heart murmurs found in adult or senior dogs are usually caused by acquired heart disease. These conditions may include:

  • Mitral valve disease in dogs
    • The edges of the mitral valve (and sometimes tricuspid valve) may become wrinkly and misshapen. This prevents the valve from closing tightly and allows blood to flow “backward” from the ventricle to the atrium, thus creating a murmur.
    • Mitral valve disease is especially common in middle-aged to older small breed dogs, including:
      • Cavalier King Charles Spaniel
      • Toy Poodle
      • Shih-Tzu
      • Maltese
      • Chihuahua
      • Miniature Dachshund
      • Pomeranian
  • Dilated cardiomyopathy (DCM in dogs)
    • The walls of the heart, especially the ventricles, may become thin and weak, preventing the heart from pumping blood effectively.
    • This condition can be hereditary in some breeds, such as:
      • Doberman Pinscher
      • Boxer
      • Great Dane
      • Irish Wolfhound
      • Newfoundland
    • Some dogs have developed diet-associated DCM after being fed grain-free, exotic ingredient, or boutique diets.
  • Heartworm disease in dogs
    • Adult heartworms live in the right side of the heart and pulmonary artery where they take up space and interfere with heart valve function. This sometimes creates a heart murmur.
    • Not all heartworm positive dogs will develop a murmur.
Doberman on a walk
The Doberman is a breed that may be more prone to developing DCM heart disease.

It is important to note that the grade of a heart murmur doesn’t always correlate with the severity of the disease. Dogs with mitral valve disease do tend to have louder murmurs as their disease progresses. However, the vet may hear a moderate murmur on physical exam for months or even years before it becomes problematic.

Alternatively, dogs with DCM may only have a faint murmur or no murmur at all, even when their heart is failing significantly. Unfortunately, sometimes the first signs of DCM are acute collapse or sudden death.

Congestive heart failure

Over time, heart disease can lead to congestive heart failure in dogs (CHF). This occurs when the heart cannot efficiently pump enough blood to keep up with the body’s demands. Blood also tends to back up in the heart and vessels. CHF can cause blood pressure problems and/or fluid build-up in the abdomen or the chest cavity.

What are the symptoms of a heart murmur?

Since heart murmurs can result from many different underlying causes, symptoms have a wide range. In some cases, you might not know that your dog has a heart murmur unless you have a stethoscope or your vet finds the heart murmur on a physical exam.

If your dog has a heart murmur that is grade IV or higher, you may be able to feel it as a vibration when you place your hand on your dog’s chest. Each beat causes a palpable thrill.

A cream-colored Spaniel laying down on the kitchen floor
Lethargy and exercise intolerance may be signs of heart disease in your dog.

You can also detect arrhythmias (abnormal heart rhythms) by feeling your dog’s chest. Heart beats should be a steady, repeatable pattern of “lub” and “dub.” If it feels like there are extra heart beats or abnormal patterns, this may indicate heart disease, so contact your veterinarian.

Symptoms associated with heart murmurs can be classified as mild, moderate, and severe.

Mild heart murmur symptoms

The following mild symptoms can be seen in dogs with heart murmurs:

  • Occasional cough
  • Mild or infrequent exercise intolerance
  • Incidental murmur in asymptomatic patient

Moderate heart murmur symptoms

Some signs of more significant heart disease may include:

  • A lethargic dog
  • Weakness
  • Exercise intolerance
  • Weak pulses
  • Coughing, especially at night
  • Increased rate or effort of breathing while awake, resting, or sleeping
  • Unwillingness to lie down to rest or sleep
  • Weight loss
  • Lack of appetite
  • Pendulous abdomen

If you notice any of the signs above, make an appointment with your veterinarian.

Life-threatening signs of heart disease in dogs

Keep a close eye out for:

  • Pale gums or blue gums (cyanosis)
  • Acute collapse
  • Abnormal posture with elbows winged out and neck outstretched
  • Respiratory distress or difficulty breathing

If your dog is showing any of these signs, this is an emergency. Seek veterinary care immediately.

Heart murmur and coughing in dogs

The most common symptom we see in dogs with heart disease is coughing with varying degrees of severity. In some cases of congestive heart disease, fluid backs up around the lungs (pleural effusion) and causes coughing. The cough may or may not be productive and is usually most notable at night.

If you notice your dog coughing, you may be thinking about a respiratory virus or allergies rather than cardiac disease. However, heart problems are a main cause of coughing in dogs, and the cough may be the first or only symptom noticed.

How are heart murmurs diagnosed?

Your vet will listen to your dog’s heart in a quiet room to diagnose the heart murmur. It is also easiest to hear the murmur when your dog isn’t nervous, shaking, or panting. Depending on your dog’s age, medical history, and the intensity of the murmur, your vet may recommend additional diagnostic tests such as:

  • Blood tests and urine tests to look for anemia or low blood protein.
  • Blood pressure measurement to look for hypertension (high blood pressure) in dogs or hypotension (low blood pressure).
  • Electrocardiogram (EKG) to evaluate your dog’s heart rate and rhythm for arrhythmias or other abnormalities.
  • Chest X-rays to evaluate heart size and shape, size of the vessels, and the appearance of the lung fields.
  • Echocardiogram (ultrasound of the heart) to evaluate the function and size of the heart chambers, flow of blood through the heart valves, pressures in different areas of the heart, and overall anatomy of the heart. Some vet clinics offer echocardiograms. In other cases, your vet may refer your dog to a veterinary cardiologist, so he or she can perform the echocardiogram, evaluate your dog, and formulate a treatment plan.
A brindle dog on his side for an EKG reading
An electrocardiogram can help evaluate the rate and rhythm of your dog’s heart.

What is the treatment for heart murmurs in dogs?

Your vet will consider the underlying cause of the murmur and the results of any diagnostic testing when he or she formulates a treatment plan. The intensity of the treatment plan generally matches the severity of the condition.

No treatment/wait and see

In some cases, a heart murmur is not an indication for treatment of any kind. For example, innocent murmurs or stress/anxiety murmurs typically resolve as the animal grows or calms down. In other cases, it may be best to monitor and see how the murmur progresses or if other signs develop before treating.

Medical management

Many causes of heart murmurs in dogs can be treated with medicine. Sometimes the medicine is intended to manage the symptoms of the disease rather than act as a primary treatment. Such is the case for dogs with valve disease. We don’t have medicine to fix the valves, but medical treatment can help make the heart pump more efficiently, manage blood pressure, and help limit the effects of congestive heart disease.

Usually, dogs on medications for heart disease will be on medication for life. Most heart conditions are progressive, so these patients usually require periodic dose or medication adjustments to make sure they’re on the best treatment plan to maintain a good quality of life.

Although not a direct treatment for heart disease, the benefits of Omega-3 essential fatty acids for dogs are numerous, including promoting good heart health. Thus, your veterinarian may recommend a fish oil supplement depending on your pup’s particular illness. 

Surgical treatment

A few causes of heart murmurs in dogs can be treated surgically. For example, a veterinary surgeon can close a PDA to prevent blood from flowing abnormally from the aorta to the pulmonary artery. Surgical repairs may cause the murmur to either resolve or lessen in intensity.

Some dogs with cardiac arrhythmias may have a pacemaker surgically implanted. Arrhythmias may or may not accompany heart murmurs in dogs.

A red Lab mix on the exam table for a cardiac ultrasound
An ultrasound of your dog’s heart can help determine the best treatment plan for your dog’s murmur.

Prognosis for heart murmurs in dogs

Unfortunately, with so many possible underlying factors, it is impossible to give generalized guidelines for life expectancy for dogs with heart murmurs. Even for dogs with similar conditions, prognosis varies on an individual basis.

Many dogs live for several years after being diagnosed with a heart murmur. For others, their condition deteriorates more rapidly—occasionally within days or weeks. Dogs with severe congenital abnormalities often have poor prognoses without surgical intervention.

Your vet will be able to give you information most relevant to your dog and his or her condition. A heart murmur is certainly not an automatic death sentence, so explore treatment options that will work best for your dog and your family.

Dog heart murmur FAQ

Can a heart murmur in a dog go away?

It depends on the cause. Innocent murmurs, physiologic murmurs, and murmurs caused by anxiety can be temporary or intermittent. A dog may have an audible murmur at the vet clinic for a check-up, but would sound normal when relaxing at home.

Additionally, in situations where the underlying cause of the murmur can be resolved, the murmur may go away. For example, a physiologic murmur in an anemic dog is likely to go away once blood values return to normal.

However, heart murmurs that result from abnormalities of the heart structure, such as those associated with mitral valve disease, dilated cardiomyopathy, or septal defects, are here to stay. As the disease progresses, they may also increase in intensity.

When your vet diagnoses your dog with a heart murmur, he or she can give you more information about how likely it is to go away and/or how it may change over time.

How serious is a heart murmur in dogs?

This is another “it depends” question. Sometimes a murmur is nothing to worry about, and sometimes it’s an indication of a dangerous, life-threatening condition. If your dog has a heart murmur, talk to your vet about next steps.

How long can a dog live with a heart murmur?

There is no standard answer since the cause of the murmur, severity of the heart issue at the time of diagnosis, how quickly the disease progresses, the dog’s response to treatment, and other factors all influence how long a dog can live with a heart murmur.

Generally speaking, most patients that I’ve diagnosed with new murmurs live for several more years, especially with good medical management. Some have more severe conditions that shorten their lifespans. And some have murmurs that never cause any problems at all!

Can a heart murmur cause a dog to cough?

Absolutely! Coughing is a very common symptom of heart disease in dogs. In fact, if I have an older small breed dog that presents to me for coughing, I’m more suspicious of underlying heart disease than primary respiratory or infectious diseases. It is that common!

As a caveat, remember that the murmur itself is not causing symptoms, but the underlying condition causes both the heart murmur and the signs of disease.

The “heart” of heart murmurs in dogs

I know it can be concerning when your veterinarian detects a heart murmur. But the good news is that some dogs with heart murmurs still have many good, happy years ahead of them.

Ensure you bring your dog to the vet for a wellness visit at least once a year (or twice a year for senior dogs). This greatly increases the odds that your dog’s murmur will be found before it starts causing problems.

Follow your vet’s recommendations for additional testing and work with him or her to create a monitoring and treatment plan. This early intervention may go far in minimizing the symptoms of heart disease and delaying the onset of CHF.

senior golden retriever and title: for everything you're wondering about your senior dog, photo

Does your dog have a heart murmur?

Feel free to share his or her story below.

This post was originally published on August 11, 2021 and updated on January 12, 2026.

Filed Under: Common Dog Health Problems, Our Blog: The Buzby Bark

Reader Interactions

Comments

  1. Karyl J Eggert says

    January 14, 2026 at 8:18 pm

    My Lhasa, Taschi was diagnosed when she was 13 years old in 2024 with a grade 4. She showed no symptoms at the time. My then Tibetan Terrier Ceba, had a grade 2 murmur as well, (I lost Ceba last year to cancer and he was exactly one year older than Tasch)… but Taschi was referred to a cardiologist and after an Electrocardiogram (EKG) the doctor put her on Vetmedin 2.5 mg twice a day.
    An aside…Right after their diagnoses of murmurs, I was sitting in the waiting room of an emergency clinic at two in the morning, when Ceba was having GI issues, I read an article in a AVMA publicatio;

    and learned about the effects of having a dog on the grain free diets that are not supplemented with Taurine and a uptick of diagnosed heart murmurs. That was a big slap in the head, as that’s what I had been feeding both dogs. I immediately did a gradual change in their diet.
    Tasch turned 15 on Oct.19, 2025 and so far, she has still not shown any symptoms. Her breathing rate while sleeping is still between 4 to 6 counts in 15 minutes which comes out around 16 t0 20 breaths per minute, and no coughing which is really a good thing. She, of course, is slowing down because of age and some knee and back problems…but so far her heart murmur is being maintained with the Vetmedin. So this, so far, is a good story.

    Reply
    • Julie Buzby DVM says

      January 17, 2026 at 11:32 pm

      Dear Karyl,
      I am so sorry for all you have been through over the past 2 years. What a blessing Taschi is doing well, and the medication seems to be keeping things under control. I appreciate you taking the time to share your story with us. It helps others to know they are not alone when facing a similar situation. Praying for continued success for your girl and wishing you both many happy days ahead.

      Reply
  2. Maria says

    June 25, 2025 at 7:37 pm

    my 4 year old rat terrier was born with a heart murmur. it has now progressed to stage 5 and he started furosimide and vetmedin twice a day. I’m looking into finding a way to get him the heart surgery he needs if he is strong enough to go under anesthesia. he has exercise intolerance, coughing, and sleeps a lot. I can’t imagine life without him and my children love him like crazy too. this experience has made me regret not finding a way to get financial help sooner for his surgery as it will cost thousands of dollars and traveling to a different state. I’m just hoping it’s not too late! things took a turn for the worse very quickly. God bless all of your fur babies and mine!

    Reply
    • Julie Buzby DVM says

      August 6, 2025 at 9:31 am

      Dear Maria,
      I am so sorry your dog’s health is declining, and you are facing this difficult situation. Praying for clarity and strength as you navigate this emotional path. Bless you both. ♥

      Reply
    • Bella garrington was my dogs name says

      October 18, 2025 at 7:46 pm

      hi my dog became ill so I was booked in with the pdsa and they told me bellas got a heart murmur and fluid in her lungs and cannot get better then we had to go again for a check up and repeatedshes poorly but I never thought she still had time with me we were awake threw the nights but
      she couldn’t resting dropped of and woke to find she still wasn’t in bed so I looked for her she was just standing in my living room I picked her up she was so cold even though I had the heating on for her but she couldn’t rest 2 hours later she had hid and when I found her she must of just passed as she was cold like when I picked her up it broke my heart she died 3 weeks before her 13th birthday she was so beautiful not one nasty bone in her body I miss her so much as I had her 1yrs after my hubby died i love you bella boo boo I sing your song i made for you and you always came and gave me kisses when I sang it to you

      Reply
      • Julie Buzby DVM says

        October 19, 2025 at 4:52 pm

        Dear Reader,
        I am so sorry for your loss of Bella. It is clear she was dearly loved, and I am certain she knew how much you cared about her. May her memory stay with you always. Wishing you brighter days ahead. ♥

        Reply
  3. Chris says

    August 21, 2024 at 3:49 pm

    My 4 year old Oliver, frenchton, was diagnosed today with a heart murmur, grade 3.
    He doesn’t really show any symptoms. We will be seeing a cardiologist in the next month to have a more thorough look at his heart. My anxiety is going crazy though, does this mean a likely shortened life for him? He gives the appearance of being as healthy as an ox…..
    This is so upsetting.

    Reply
    • Julie Buzby DVM says

      September 8, 2024 at 8:59 pm

      Hi Chris,
      I am so sorry Oliver is facing this worrisome heart issue. I am glad you have an appointment scheduled to see the cardiologist as they will be able to answer all your questions about prognosis and what to expect in the future. There really isn’t enough information at this point to know if this will shorten Oliver’s life. Many dogs are diagnosed with heart murmurs and go on to live long happy lives. Try not to let the fear of the unknown weigh you down. There is hope and I pray your boy will receive favorable results. Feel free to leave an update after you see the specialist. Best wishes to you both!

      Reply
    • Alexa Rodriguez says

      March 2, 2025 at 10:15 am

      Hi! Heart murmurs are so serious. I’m heartbroken..lost my chihuahua baby Kahlua on February 27-2025.. my life is not the same..Bless your baby .and hope gets the best care..🙏🏻❤️

      Reply
      • Julie Buzby DVM says

        March 5, 2025 at 10:28 am

        Dear Alexa,
        I am sorry for the loss of your Chihuahua. Wishing you brighter days ahead. Bless you. ♥

        Reply
        • EL PEECHON says

          July 29, 2025 at 3:32 pm

          I have lost many throughout my life and i am saddened ,and the pain never leaves but i have expectancy to see them all one day in heaven,God bless you and hope you keep adopting others in need of family.

          Reply
  4. Karen says

    July 4, 2024 at 11:05 am

    Our 15 yr old Boston terrier, Fenway, recently started yipping when eating .We narrowed it down to hard food, Thinking it might be tooth related as everything else was normal, we took her to our vet who wanted to do a dental cleaning and while doing that under anesthesia examine the mouth , take X-rays. They found the tooth but during the course of the procedure, they said Fenway had developed a heart murmur and stopped. My question is, she is and always has been asymptomatic Her weight is good, she goes on regular walks., doesn’t get short of breath. All activities are normal. All pre cleaning labs were normal.. She was miserable when we got her home .. Can a heart murmur form due to anesthesia/surgery. Can a heart murmur go away on its own? We don’t want to put her through any more aggressive tx., if possible.

    Reply
    • Julie Buzby DVM says

      July 4, 2024 at 2:42 pm

      Hi Karen,
      I am sorry Fenway is dealing with this worrisome issue and I understand why you are concerned. I have encountered similar problems with patients in the past where they develop a transient murmur during anesthesia. I don’t think the anesthesia necessarily causes the murmur. I would assume the heart valve is already weakened and anesthesia allows it to become more pronounced. Sometimes these murmurs resolve on their own and sometimes they don’t. If the murmur is low grade, it can be ok to give it some time and see how thing progress before pursuing more advanced testing. Many dogs live with a mild murmur and lead normal happy lives. I encourage you to discuss your concerns with your vet and see what they recommend. Wishing you all the best and praying for a clear path forward.

      Reply
  5. Deb Cardenas says

    July 2, 2024 at 1:36 pm

    My 15 year old shihtzu has a severe heart murmur. She has been having these “attacks” where she cannot walk, is paralyzed in the moment, and she cries out in pain and/or fear. It is breaking my heart. She does fine unless she gets excited and is overly active. She has just started on medication, and I am hoping it will help her. However, I know the time is coming where I will need to make a decision about her quality of life. How will I know when her pain outweighs her quality of life? These attacks are at least once a day currently. I don’t want her to be miserable just because I am being selfish.

    Reply
    • Julie Buzby DVM says

      July 2, 2024 at 9:06 pm

      Dear Deb,
      I am sorry your senior girl is struggling with heart issues and her quality of life is declining. I understand how difficult it can be to decide when to say goodbye. I will attach links to other articles with more information and advice. Hoping you can find the answers you need to navigate this emotional path. Praying for comfort and peace for you and your sweet girl.

      1. Using a Quality of Life Scale for Dogs
      2. Signs of a Dog Dying of Heart Failure
      3. How Will You Know When It’s Time to Euthanize Your Dog? 5 Caring, Heartfelt Messages
      4. Preparing for Your Dog’s Euthanasia: 10 Thoughts for Peace

      Reply
  6. Joan says

    May 7, 2024 at 3:58 am

    Hi our Dog Dexter has got heart murmur he is a ckcs age 8 and he is breathless coughing passing out and fluid a dark colour always dripping out his mouth he also has black bald patches on his side is he in end of life so young

    Reply
    • Julie Buzby DVM says

      May 7, 2024 at 9:21 am

      Dear Joan,
      I understand your concern for Dexter and these severe symptoms he is exhibiting. Unfortunately, the Cavalier breed is known for being very high risk for developing heart issues. Is he currently taking any medications to help with his heart function? If not, this would be where I would start. Please reach out to your vet and ask about treatment options. With the right combination of medications, your pup may be able to improve his quality of life and extend his life. Praying for healing for your sweet boy. Bless you both. ♥

      Reply
  7. Ann says

    April 12, 2024 at 9:40 pm

    I have a 2.5 year old lab/heeler mix. she has had a grade 6 heart murmur for about a year and a half. She was born with a small murmur and it progressed.
    It has also been determined she has an enlarged heart. she has been on Vetmedin 2x per day for 1.5 years.
    Lately she has been very reactive and has severe anxiety. She has also become intermittently incontinent.
    Due to all of the above, and her new reactivity making her a bite risk to the kids and their friends in the house, my vet has suggested that I consider putting her to sleep. To give her a dignified send off before things progress and she gets more uncomfortable, starts to suffer and before she bites a child or another animal in or out of the home (those are her major triggers).
    She is still playing and we go on long walks. She isn’t slowing down.
    I am trying to weigh pros and cons of the short natural life she has ahead due to her conditions. I’m also weighing the option of letting her go before the inevitable CHF kicks in and she suffers.
    I have never been more torn up inside in my life.

    Reply
    • Julie Buzby DVM says

      May 31, 2024 at 12:49 pm

      Dear Ann,
      I am so sorry you are facing this impossibly difficult situation. Unfortunately, I don’t allow much grace when it comes to dogs that are a bite risk, especially when it comes to children. I would rather lovingly give a dog a peaceful goodbye than end up with a child mauled and permanently scarred for life or heaven forbid it be a fatal bite. I wish I could spare you from this emotional decision. Praying for strength and comfort. Bless you and your pup.

      Reply
  8. Cameron says

    February 20, 2024 at 3:03 am

    My 14 year old rat terrier has a stage IV murmur. He only has 12 teeth left, the vet wanted to do more extractions during his cleaning this past Oct but I couldn’t afford it. Besides his teeth he has had great health, to the point where past vets would question if he really was that old.
    But over the past 3 years he also has dementia that’s progressed. He was on rimadyl and fluoxetine for his arthritis and the anxiety symptoms for his dementia. Two weeks ago he suddenly started having what I thought were seizures, so the vet stopped those meds and now he’s on gabapentin and levetiracetam but he’s still having these episodes. After some research think that it could be syncope and am worried that he’s developed congestive heart failure. Considering his age and other conditions I’m not sure doing an ECG is worth it. I feel helpless. I love my little guy but I don’t want to prolong his suffering for my own selfishness.

    Reply
    • Julie Buzby DVM says

      March 12, 2024 at 1:51 pm

      Dear Cameron,
      I understand your concern for your senior guy, and I am sorry his health is starting to decline. Heart failure is definitely a possibility, and I would encourage you to discuss this with your vet. You can make your wishes known and let them know if you would rather not pursue diagnostics. Your vet may want to try a medication just to see if it helps improve your pup’s condition. It is ok to forgo testing and treatment and focus instead on palliative or hospice care. The main thing is your boy’s quality of life. Hoping you can get the answers you need to make the best choice for your sweet boy. Praying for clarity and strength as you navigate this difficult path.

      Reply
      • Sally Hunt says

        March 31, 2024 at 6:44 am

        Hi my 19 year old jack Russell has heart murmur and until now there have been no obvious symptoms but he is now persistently coughing or hacking especially at night . He is still going out in the garden and eating well but the cough sounds terrible and it is of some opinion perhaps I should have him put to sleep but it is so hard to make this decision..

        Reply
        • Julie Buzby DVM says

          April 9, 2024 at 10:15 am

          Dear Sally,
          I understand your concern for your senior guy with the severity of these coughing episodes. Is your vet aware of this recent change in your boy’s health? While you may be facing some difficult decisions about quality of life, I would not assume there is no hope for improvement just yet. There are several medications that can be used to help with heart function. If your boy has not tried any treatments, this could be a great option. I encourage you to reach out to your vet and be honest about your concerns and wishes. They can do a quality-of-life assessment and help guide you along this difficult path. Wishing you comfort and peace. Bless you and your sweet boy.

          Reply
  9. Kay says

    November 21, 2023 at 1:06 am

    My chi mix is 15 years old and has a grade 5 heart murmur, enlarged heart, kidney disease, osteoarthritis, cataracts, collapsing trachea, and some signs of CCD. She’s had a dental with extractions every year for the last three years, but she will not let me brush her teeth without thrashing and biting me. I recently switched vets; understandably, they’d like to do a heart workup before any dental (the last did not require this which is surprising to me now that I’m more educated). I’ve made an appointment for her this week because her gums are swollen, and I can tell she’s uncomfortable. My question is whether or not it is a good idea to pursue all of this labwork and anesthesia with all of her other comorbidities? I want to do whatever I can to keep her comfortable. While money is not my most significant concern, it is a concern, but I mostly want her to be safe and get her the best treatment.

    Reply
    • Julie Buzby DVM says

      February 1, 2024 at 10:37 am

      Hi Kay,
      Goodness that is a tough situation. If your dog’s mouth is painful, then I am not sure there is really a good way to control the pain without addressing the dental issues. I understand that would require anesthesia and also a big risk for your pup. Ultimately, you have to decide if you want to pursue treatment or palliative care. Either choice is loving and acceptable but for this situation there just isn’t a middle ground. Hoping you were able to find the answers needed to make the best decision for everyone involved. Feel free to leave an update and let us know how your sweet girl is doing.

      Reply
  10. Arleen Klonicke says

    July 25, 2023 at 5:10 pm

    Peanut was adopted by us when he was 9 1/2 yrs old. He’s almost 14 yrs now. He’s on two heart meds and an allergy med. He can’t really hear very well and one cataract is getting worse. He’s very anxious unless my husband and I are both home. he soaks himself from his mouth to his chest and front paws. He coughs a lot through the night. He reached the maximum dose of meds, but still coughs a lot through the night. He gets exhausted sometimes. Does the murmur or CHF make him more anxious? His trachea is okay. Does he know he’s not that healthy? Sometimes he seems frightened during rough coughing sounds. We have a great vet who tends to him very well. I think these are questions she may not have answers for be ause she tells us he’s an old guy , take him home and enjoy him.

    Reply
    • Julie Buzby DVM says

      September 27, 2023 at 10:21 am

      Dear Arleen,
      I understand your concern for your senior guy and think it is great you are keeping such a close eye on these behavior changes. I am not sure the CHF itself causes anxiety, but it is possible that his struggling to cough and breathe are sources of stress. Also, I suspect your pup is probably dealing with some symptoms of dementia/cognitive dysfunction. This condition alone can cause anxiety and stress behaviors. Not to mention it may be scary for your boy since he can no longer see or hear well. I think your vet is right, Peanut may be nearing the end of his life and the best thing you can do is make the most of the time you are gifted. You may be facing a difficult decision about his quality of life before too long. So, in the meantime, try to fill each day with joy and happiness. Wishing you both the best and praying for wisdom as you navigate this difficult path ahead.

      Reply
  11. Dharma Klock says

    June 14, 2023 at 11:33 am

    My dog recently had updated diagnoses of Stage 6 heart murmur. Diagnosed with Stage 2 heart murmur 7-months ago. So it has progressed. The only symptom he currently has is reduced ability to exercise. He has stopped running and is unable to go on a longer walk. He is 10-years old.
    I have decided not to have him see a cardiologist and do medication, as I feel the prolonging of life is not necessary due to his age and other factors (his teeth are in very poor shape). I assume based on his current activity (which is pretty good) we have several more months before it will progress to a congested heart failure situation? or is it less then that? Just want to estimate the best last days for my dog. Thanks

    Reply
    • Dr. Julie Buzby says

      August 18, 2023 at 1:41 pm

      Hi Dharma,
      So sorry to hear that your dog’s heart murmur has progressed so quickly and that he is now having some trouble exercising. Unfortunately it is hard to predict how long it will take for a dog to develop congestive heart failure. Sometimes it seems to happen almost overnight and quickly becomes life-threatening. Other times it sets in slowly and you notice more of a gradual decline. I hope you are able to enjoy some quality time with your dog and that when the time comes to let him go, you will have peace and clarity about the timing. Thinking of you!

      Reply
  12. Andrea says

    October 15, 2022 at 10:19 pm

    As if it wasn’t bad enough to have an ear hematoma due to trauma a couple weeks ago, two vets since then have now said our dog has a grade 3 heart murmur. AND she just broke a tooth chewing on a bone! Of course, no vets can take her right away…we have to wait to see a dental vet for a week and I am just beside myself. They all claim that infection won’t take hold that quickly, etc. But now with the heart murmur, I worry about endocarditis. I worry about her comfort. We have an appointment with a vet cardiologist but that’s a two week wait. It’s amazing how we can’t seem to get help for our dog when we need it most. ER vets are apparently not equipped for dental emergencies and because of the heart murmur, we need to know what kind it is before getting anesthesia. It’s a nightmare not knowing and feeling so powerless. She’s always been incredibly healthy and suddenly we have an ear hematoma, broken tooth or teeth and a grade 3 heart murmur. God help us.

    Reply
    • Julie Buzby DVM says

      October 17, 2022 at 10:50 am

      Hi Andrea,
      I am sorry you are dealing with so many issues all at once! You and your poor pup have really been through it in the last few weeks. I understand your concern with the fractured tooth and having to wait to see the specialist. While endocarditis is a risk when dealing with uncontrolled dental disease, I am much less concerned about this with a recent tooth fracture. It sounds like you are doing a great job advocating for your dog’s health and wellbeing. You have put things into motion and have done all you can at this point. I am hopeful that all will be resolved quickly, and your sweet girl can make a full recovery. Best wishes!

      Reply
  13. Rosalind Dawson says

    August 30, 2022 at 2:07 pm

    What about crying out pain. You never really mentioned this.
    She has a level 1 and takes a pill every 12 hrs. Here lately she
    Cries out briefly and then nothing else. She refuses me to touch her chest
    She goes to the vet in a week. Just wondering on the crying out pain that hits her occasionally. Sleeping standing walking etc. never know when it will happen.

    Reply
    • Julie Buzby DVM says

      August 31, 2022 at 7:02 pm

      Hi Rosalind,
      You are right to be concerned about your pup crying out in pain. This is not a symptom or side effect of a heart murmur. Since I haven’t examined your dog myself, I can’t make specific conclusions. I highly recommend you call your vet and discuss this worrisome behavior. They may need to do some testing to figure out what the cause of this pain could be. Also, dog’s do not usually walk while sleeping. I am suspicious that what you are witnessing is behaviors related to canine cognitive dysfunction or possible seizure episodes. Again, please contact your vet as soon as possible to have your dog evaluated.

      Reply
    • David Bentick says

      November 10, 2022 at 7:28 pm

      Hello, Rosalind.
      Some dogs with heart disease don’t like to be handle around the chest, it can be uncomfortable depending on the stage of their heart disease. Some dogs have enlarged hearts and fluid on their chest, so… placing anymore pressure on their chest will add to their discomfort.

      Reply

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