Chatham-Kent Heartworm Disease Cases Are On The Rise

The vast majority of heartworm-positive cases in Canada happen right here in Southwestern Ontario. Heartworm disease is transmitted from dog to dog through mosquito bites. When a mosquito bites an infected dog, it takes in tiny heartworms, which it then transmits to the next dog it bites. Heartworms then mature in the dog’s bloodstream and collect in its heart and blood vessels.

Heartworm larvae can grow over 12 inches in length and can do immense damage to a dog’s heart and lungs. Heartworm is particularly dangerous for dogs because it takes several months for the symptoms to start showing. If the proper treatment is not administered, Heartworm disease can be fatal.

Indications your dog may have heartworm include fatigue, weight loss and coughing.

Ensuring Your Dog Is Protected
Preventing heartworm disease in your dog is simple. Just visit one of our Chatham-Kent clinics (Merritt Animal Hospital, Dresden Veterinary Clinic and Sydenham River Veterinary Office) to pick up preventative medication that will keep your dog safe during mosquito season. You can also have your dog tested for heartworm disease to ensure the condition is not already present.

Give us a call at 519.360.4508 to book your appointment.



Holiday Hours for 2020

The holidays are fast approaching! Please keep in mind our holiday hours outlined below:

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Last updated: July 23, 2020

Dear Clients,

With recent changes to restrictions on businesses, we can continue providing our full range of services, under certain restrictions. As our province enters the next phase of the reopening plan, we have some updates to share with you about our safety measures.

We will now see all cases by appointment only including pets in need of vaccines, wellness exams, blood work, heartworm testing, spays and neuters, dental services, parasite prevention, and more.

Beginning June 29, 2020, clients are able to come into the hospital with their pets with the following restrictions:



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.


Merritt Animal Hospital:
Monday to Friday: 8:30 am - 5:30 pm
Saturday: 9:00 am - 5:00 pm
Sunday: 10:00 am - 2:00 pm

Dresden Veterinary Clinic:
Monday to Friday: 8:30 am - 5:30 pm
Saturday: 9:00 am - 12:00 pm
Sunday: Closed

Sydenham River Veterinary Office:
Monday - Friday: 9:00 am – 5:00 pm
Saturday & Sunday: Closed

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

- Your D.M.S Group Veterinary Team