- FDA - Heartworm Prevention in Your Pet
- American Animal Hospital Association
- AAVP (American Association of Veterinary Parasitologists)
- American Veterinary Medical Association (AVMA) Animal health page
- Companion Animal Parasite Council
- Feline Heartworm Disease - Cats get heartworms too! .
RT @AHS_Think12: Hear Dr. Tom Nelson, a veterinarian at Animal Medical Center in Alabama, as he discusses why we are often taught to "test"…