Heartworm disease causes severe, chronic suffering in affected dogs, and accessible preventive medication makes it a largely preventable welfare burden across affected regions.
Heartworm disease is a largely preventable welfare problem. The chronic suffering of affected dogs — progressive respiratory compromise, exercise intolerance, fatigue, and eventual heart failure — occurs because prevention was not provided. Monthly preventive medications are inexpensive, safe, and highly effective. Welfare-centered companion animal care in heartworm-endemic regions treats prevention as a non-negotiable responsibility. Access barriers — cost, veterinary access in rural areas — represent the legitimate welfare challenge, and programs that provide low-cost prevention to underserved communities address a genuine welfare equity concern.