Our team continues to be here for you and your cherished pets. We are OPEN and are now able to provide a wide range of services. To learn more about the changes we have implemented in response to COVID-19 and what to expect during your next visit, click here.


“Do I Really Need to Test for Heartworm?”

We often get asked, “Do I really still need to test for heartworm?” The answer is yes, and here is why. Despite Ontarian’s excellent yearly compliance with providing their dog’s heartworm preventatives, the source of infection remains. It is because of two reasons.

Every year dogs are being adopted and brought here from places like the U.S.A. and Cuba where heartworm is prevalent. It is estimated that Canadian’s adopt tens of thousands of dogs from around the world each year, which means we are also adopting the diseases that come with them (including heartworm).

Wildlife is hosts for heartworm infection as well and for obvious reasons do not receive preventative medications or treatments. It leaves our pets at continued risk of acquiring heartworm.

Heartworm Transmission (courtesy: American Heartworm Society)
Adult female heartworms living in an infected dog, fox, coyote, or wolf produce microscopic baby worms called microfilaria that circulate in the bloodstream. When a mosquito bites and takes a blood meal from an infected animal, it picks up these baby worms, which develop and mature into “infective stage” larvae over 10 to 14 days. When the infected mosquito bites another dog, cat, or susceptible wild animal, the infective larvae are deposited onto the surface of the animal’s skin and enter the new host through the mosquito’s bite wound. Once inside a new host, it takes approximately six months for the larvae to develop into sexually mature adult heartworms.

Heartworm Testing
We recommend what is called a 4Dx Snap Test (run in-clinic or at the laboratory) to be performed each year. Using a small blood sample, it tests for the body’s response to heartworm as well as tick-borne diseases (including Lyme Disease) which if positive, indicates an infection. As the treatment for heartworm disease is different than the prevention, it is important that we rule out a heartworm infection before giving our dogs the monthly medication. While we have confidence in the products that we recommend, much like anything in life, there are no guarantees. We recommend yearly testing to ensure our dogs are safe. Instead of assuming the product has worked 100% and that clients have not given the medication late, missed or late doses, etc. If dogs are left untreated, heartworm infection can cause irreversible heart disease greatly shortening the life of your pet.

As with anything, we are happy to answer any questions or concerns you may have regarding heartworm testing and prevention.

Please feel free to call us at (613) 394-4811, or email us at info@hillcrestanimalhospital.ca.

Written by: Sarah Tremblay, RVT



Veterinarian giving a cat a vaccination

What you need to know about kitten vaccinations

Kittens will get vaccinations at 8 weeks, 12 weeks and 16 weeks, then annually. Overview A vaccine is a substance created to incite an immune response for a particular disease.  It needs to be given multiple times to a kitten to initiate his immune system. 

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Last updated: June 26, 2020

Dear Clients,

With recent changes to restrictions on businesses, we are pleased to advise that effective May 19, 2020 the restrictions on veterinary practices have been lifted. Based on these changes, below are some important updates to our operating policies.


This includes vaccines, wellness exams, blood work, heartworm testing, spays and neuters, dental services, and more!



We are OPEN with the following hours:

Monday to Friday 9:00 am – 5:00 pm
Saturday & Sunday: Closed


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.

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

- Your dedicated team at Hillcrest Animal Hospital