- 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: Heartworms have been documented in Arizona and the other 49 states and worldwide. Keep your pet protected with heartworm p…