Small orange dog jumping through the air in a field

Heartworm Testing for Dogs

Heartworm, known as Dirofilaria immitis, is a type of parasite that your loyal companion can get from the bite of a mosquito. Heartworm can severely damage your pet’s hearts, lungs and other internal organs. They can grow to about 1-feet-long and can be fatal for your pet if they continue to live inside them. Cats, dogs and other animals can get heartworm but our canine pals are the most ideal host. In fact, several hundreds of heartworms can live inside a dog if left untreated.

What are the symptoms of heartworm?

In the early stages, or if your pet has a mild case of heartworm, symptoms are almost non-existent. This is why they should come into the hospital regularly for a wellness exam. Please contact our team at 613.543.2812 to schedule your next appointment. As the disease progresses, symptoms become more obvious, especially if your pet is highly active or if they have many heartworms in them. These signs include: persistent cough, weight loss, swollen belly, fatigue, laboured breathing and difficulty walking.

What are the treatment options for heartworm?

Prevention is the best defence against heartworm. It is important that your pet receives regular medications against heartworm and that their medications are always given on time – even missing just one dose can leave your pet unprotected. If your pet does test positive for heartworm, treatment can take up to several months depending on disease severity. Manual removal and drug injections may be used to kill the heartworms in your pet. Lifestyle modifications such as limiting the amount of exercise your pet gets may also be prescribed, as increased movement causes heartworm to multiply even faster.

Last updated: March 14, 2022

Dear Clients,

We are happy to announce that as of March 21, 2022, we will be reopening our doors (with some restrictions).

Here are some important changes to consider when visiting the hospital:


Food and Medication Pick Up

Face Masks are required to enter the building and must remain on for the duration of your visit.


Have you welcomed a new furry family member to your home? We’d love to meet them! Visit our Must Know New Pet Owner Information page for useful resources and helpful recommendations for new pet owners.

Our team is very excited to start welcoming you back into the hospital! We kindly ask for your patience while we make these adjustments. Any kind of disrespectful behaviour will not be tolerated by our team and may result in the denial of service. Please be kind, we're all in this together.

- Your dedicated team at Morrisburg Animal Hospital