Heartworm disease causes severe cardiopulmonary suffering and is preventable. Understanding prevention strategies protects dogs in endemic regions from this serious parasite.
Heartworm welfare is almost entirely preventable, making the thousands of dogs suffering from active heartworm disease a preventable welfare failure. The treatment process itself causes significant welfare harm — melarsomine injections are painful, strict cage rest is required for weeks, and dying worms can cause pulmonary embolism. Monthly prevention medication costs a fraction of treatment and virtually eliminates welfare risk. In endemic regions, heartworm prevention should be treated as a fundamental welfare responsibility equivalent to vaccination.