Companion Animals

Dog Heartworm Prevention Welfare

Heartworm disease causes severe cardiac and pulmonary damage, but monthly preventive medication makes it entirely preventable in dogs in endemic regions.

Key Facts

Heartworm (Dirofilaria immitis) is transmitted by mosquitoes and endemic in southern Europe, Americas and Asia
Adult worms live in the heart and pulmonary arteries causing cardiac failure and death
Monthly preventive medications including milbemycin and selamectin are highly effective
Treatment of established infection is possible but stressful, expensive and risky
UK dogs travelling to endemic European countries require preventive treatment during their visit

Welfare Considerations

Heartworm causes severe cardiac suffering that is entirely preventable with monthly prophylaxis. Ensuring dogs receive appropriate prevention before travel to endemic regions prevents needless suffering.

What You Can Do

Consult your vet about heartworm prevention before any travel to Mediterranean or tropical regions
Begin monthly prevention treatment before entering endemic areas and continue for specified period after return
Test dogs returning from extended stays in endemic areas to ensure no infection occurred