April is Heartworm Awareness Month

10% off Heartworm Testing and Preventative

Heartworm is a serious and often fatal disease of dogs and cats, and other species of mammals, is preventable. And, with, the beginning of a brand new mosquito season, to help raise public awareness, April is being recognized as Heartworm Prevention Month.

Most pet owners wouldn’t knowingly put their pet at risk of becoming infected with a potentially deadly disease, yet according to The American Heartworm Association millions of pet owners who fail to protect their dog from heartworm infection are doing so every day.

Heartworm disease is completely preventable; the American Heartworm Society recommends that pet owners take steps now to talk to their veterinarian about how best to protect their pets from this dangerous disease.

Canine heartworm disease is a potentially deadly infection. , caused by worms (dirofilaria immitis) that may grow to be 14-inch-long adults.  These worms live in the right side of the heart and arteries and of the lungs.  Dogs of any age and breed are susceptible to infection.  Heartworm infection can cause potentially serious damage to these arteries, eventually leading to heart failure, and in severe cases damage other organs such as liver and kidneys.  In extreme cases, a dog can be infected with several hundred heartworms. Cats are also susceptible to the disease, but do not contribute significantly to spreading the infection.



We will treat you as family and your pets like our own.
John B. Rethman, D.V.M.
Ginger Curry, Practice Manager

Animal Medical Center of Warrenton
79 Garrett Street
Warrenton, VA 20186
Telephone: (540) 428-0025
Fax: (540) 428-2005


Hours of Operation

8 AM – 5 PM Mon. – Fri.
8 AM – 12 PM Saturday

Closed on Sunday

For emergencies after hours call Prince William Emergency Veterinary Clinic at 703-361-8287


Dr. John Rethman and his staff are committed to excellence and a pro-active approach in providing compassionate small animal care. He has been practicing veterinary medicine in the Northern Virginia area since 1982.

Office Photo's 2011 015

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