Our vision:
A world without heartworms.
More than a million pets in the U.S. have heartworms. But heartworm disease is preventable.
True to its mission of leading the veterinary profession and public in understanding heartworm disease, the American Heartworm Society sponsors heartworm education and research.
Find your heartworm resources here
Whether you’re a veterinarian looking for info on heartworm—or you’re a dog or cat owner who wants heartworm disease explained in easy-to-understand language—you’ve come to the right place. Our Resource Center will link you to hundreds of heartworm education tools, from articles, podcasts and videos to brochures, posters and infographics.
Every asset on the American Heartworm Society (AHS) website can be downloaded for free, because it’s our mission is to lead the veterinary profession and the public in the understanding of heartworm disease.
Subscribe to AHS Updates
Stay up to date on all things heartworm by subscribing to free updates from the American Heartworm Society. When there’s new science to share, new continuing education opportunities, new educational resources or new tools for you to use, you’ll be among the first to know about them. Subscription is free!
Preventing, diagnosing and treating heartworms
According to a 2025 veterinary survey conducted by the AHS, the American Heartworm Society’s canine and feline guidelines are the leading resources for veterinary practitioners looking for scientific guidelines on heartworm management in dogs and cats. Our guidelines are considered living documents and are continually updated to incorporate the latest science and expert recommendations.
Support the AHS mission
Heartworm disease can be a devastating disease—and it’s also one of the most preventable diseases in pets. You can help the American Heartworm Society expand our educational mission by supporting us in one of the following ways:
- Become a member. AHS members receive the AHS Bulletin, participate in exclusive quarterly Zoom discussions with AHS experts and receive special pricing on client brochures and Triennial Heartworm Symposium registration.
- Donate. Looking for a good cause? Both one-time and ongoing donations help us make a difference in the lives of people, their pets, and the veterinary professionals devoted to caring for them.
