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Heartworm Disease In Dogs

Heartworm In Dogs

What Is Heartworm In Dogs?

Heartworm disease is a serious and potentially fatal disease that affects dogs all over the world. It is caused by a parasitic worm, known as Dirofilaria immitis, which is transmitted by mosquitoes.

Once infected, the worms can grow up to 12 inches in length and take up residence in the heart and lungs of the affected dog. This disease is preventable, but if left untreated, it can lead to heart failure, lung disease, and even death.

Symptoms Of Heartworm In Dogs

Heartworm disease can be asymptomatic in the early stages, which means that some dogs may show no signs of the disease until it has progressed to a more advanced stage.

However, as the disease progresses, dogs may exhibit the following symptoms:

  • Coughing, especially after exercise or excitement
  • Fatigue and weakness
  • Difficulty breathing or shortness of breath
  • Decreased appetite and weight loss
  • Swollen abdomen due to fluid buildup
  • Fainting or collapse

If you notice any of these symptoms in your dog, it is important to seek veterinary care immediately. Early detection and treatment can greatly improve your dog's chances of recovery.

Treatment Options For Heartworm In Dogs

The treatment for heartworm disease in dogs can be challenging, and it may not always be successful. The treatment involves killing adult heartworms using a medication, which can be dangerous for the dog due to the risk of complications such as blood clots.

Your veterinarian will evaluate your dog's condition and determine the best course of treatment, which may include medications to help reduce inflammation and pain, as well as antibiotics to prevent secondary infections.

In severe cases, surgical removal of the worms may be necessary, but this is a risky procedure that is not always successful.

Home Remedies For Heartworm In Dogs

There are no effective home remedies for heartworm disease in dogs. The treatment requires specific medications and a treatment plan that only a licensed veterinarian can prescribe.

How To Prevent Heartworm In Dogs?

Preventing heartworm disease is much easier and less expensive than treating it. There are several preventative measures that dog owners can take to protect their pets from heartworm disease.

These include:

  • Monthly heartworm preventative medication - this medication is available in several forms, including chewable tablets, topical solutions, and injections. It is important to administer the medication regularly and according to your veterinarian's instructions.
  • Mosquito control - reducing the number of mosquitoes in your dog's environment can help prevent transmission of the parasite. This can be accomplished by using mosquito repellents, removing standing water, and keeping your dog indoors during peak mosquito activity.
  • Annual heartworm testing - annual testing can help detect heartworm disease in its early stages when it is easier to treat.

Affected Dog Breeds Of Heartworm

Heartworm disease can affect dogs of all breeds, but some breeds may be more susceptible than others. Breeds that are known to be more susceptible to heartworm disease include:

Causes For Heartworm In Dogs


Heartworm disease is caused by a parasitic worm known as Dirofilaria immitis. The worm is transmitted through the bite of an infected mosquito.

Once a mosquito bites an infected dog, it becomes a carrier of the worm and can transmit it to other dogs it bites. This makes heartworm disease particularly prevalent in areas with a high mosquito population, such as warm and humid regions.

It is important to note that heartworm disease is not contagious, and dogs cannot contract the disease from other infected dogs.

When To See A Vet For Heartworm In Dogs?

If you suspect your dog has heartworm disease, it is important to see a veterinarian as soon as possible. Symptoms of heartworm disease can include coughing, difficulty breathing, lethargy, weight loss, and a decreased appetite. If left untreated, heartworm disease can be fatal.

Food Suggestions For Heartworm In Dogs

There is no specific diet that can prevent or treat heartworm disease in dogs. However, a healthy and balanced diet can help keep your dog in good overall health, which may help prevent complications from heartworm disease.


Heartworm disease is a serious and potentially fatal condition that can affect dogs of all breeds. It is caused by a parasitic worm that is transmitted by mosquitoes.

Symptoms of the disease can include coughing, lethargy, exercise intolerance, and difficulty breathing. Treatment for heartworm disease is complex and can be expensive, but prevention is much easier and less costly.

Preventative measures include monthly heartworm preventative medication, mosquito control, and annual heartworm testing.

By taking these steps to protect their pets, dog owners can help ensure that their furry companions remain healthy and happy for years to come.

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