Heartworm disease is a blood parasite transmitted by mosquitoes. Yearly heartworm testing and prevention are recommended for all dogs in Ontario. Heartworm preventatives are given once monthly from June to November and many products also now combine flea and internal parasite control. Similar products are also available to protect our outdoor cats. Tick borne diseases such as Lyme disease, are becoming more common in Ontario as well. We carry products that are very effective and safe at preventing ticks for your dog. Internal parasites such as hookworm or roundworm can cause diarrhea and ill health in your dog or cat and are very common in the environment. We will work with you to develop a specific parasite prevention plan for your pet based on their unique lifestyle.