Dog Heartworm Test

Dog Heartworm Test

In the spring, you may hear people talking about Heartworm Disease and you probably ask yourself, what is heartworm disease? Heartworm is a parasite transmitted through the bite of a mosquito. The baby worms migrate through the bloodstream and develop into adults in the blood vessels of the heart. In Ontario, the goal is to prevent infection with Heartworm and keep your dog happy and healthy and able to live a full life.

If a dog has heartworms, what symptoms should I look for?

The most common symptoms are decreased exercise tolerance, coughing and episodes of fainting. Many heartworm infections are diagnosed in dogs who have no symptoms at all.

How does a dog get heartworms?

A mosquito carrying the baby or larval stages of the parasite bites a dog and transfers the worms into your dog’s blood.

What are the treatment options for heartworms?

We focus on preventing heartworm by administering monthly preventive medication during the warmer months (June through to November). Treatment for heartworm includes several injections of a drug designed to kill the heartworm parasite within your dog.

Why is recovery for heartworm treatment so challenging?

It is really important that your dog stays calm and rested during the treatment of heartworm disease to prevent any dead or dying worms from becoming lodged within the blood vessels of the heart or lungs.


Senior dog giving a high five to a human hand

Geriatric Care - Looking After a Senior Pet

As your pet gets older, they need to get regular check-ups with your vet to make sure they are fit and healthy. Senior pets are more likely to have health issues, and monitoring with routine check-ups and bloodwork is a perfect way of keeping ahead of any illness.

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Last updated: December 16, 2020

Dear Clients,

Thank you for choosing Seneca Animal Clinic for your pets' veterinary needs. As we continue to adjust to the "new normal," we have implemented new protocols to keep you and our team safe.

It is still preferred that you stay in your vehicle while we bring your pet in for their appointment. However, as of August 14, 2020, we will be allowing one client to accompany their pet during their visit for urgent, new puppy/kitten, or euthanasia appointments.

Should you choose to come in with your pet, we kindly ask that you comply with the following protocols:

  • Our doors will remain locked. Please call us at 416.494.1109 upon your arrival.
  • Face coverings must be worn to enter the clinic.
  • Physical distance with staff and other clients while inside the building.
  • Use hand santizing station upon entry.
  • Continue the use of credit cards as the preferred payment method.
  • Continue with curbside pickup of food and medication (unless you have used our online store and are having your order delivered directly to your home). To place an order through our online store, visit our website and click on "Online Store".
  • If you wish to wait in your vehicle during the appointment, when you arrive, please remain outside the hospital and use your cell phone to call us. We will take a history of your pet's health and discuss any concerns. A staff member will then meet you outside to bring your pet into the hospital for an examination. The Veterinarian will call you to discuss the recommended treatment plan. After your appointment, a staff member will return your pet to you outside, and take care of any needed medications and payment.

    If you wish to connect with a veterinarian via message, phone or video, visit our website and follow the "Online Consultation" link.


    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.


    We are OPEN with the following hours:

    - Monday & Tuesday: 8:00 am - 6:30 pm
    - Wednesday: 8:00 am - 6:00 pm
    - Thursday: 8:00 am - 6:30 pm
    - Friday: 8:00 am - 6:00 pm
    - Saturday: 9:00 am - 1:00 pm
    - Sunday: CLOSED

    Thank you for your patience and understanding and we look forward to seeing you and your furry family members again!

    - Your dedicated team at Seneca Animal Clinic