Parasite prevention is a foundational welfare intervention for companion dogs, protecting against diseases that cause significant suffering and early death.
Parasite prevention is welfare protection delivered through monthly or quarterly medication. A dog that develops heartworm disease experiences months of progressive respiratory and cardiac failure — suffering that is entirely preventable. The welfare cost of untreated tick-borne disease — fever, joint pain, fatigue, and potentially fatal organ failure — is similarly avoidable. These are not rare catastrophic events but common, geographically widespread welfare threats that veterinary medicine has developed effective preventive tools to address. The barrier to prevention is primarily owner awareness and cost — making parasite prevention accessible and educating owners about the diseases they prevent is therefore a welfare priority. Allowing a dog to suffer from a preventable disease is a welfare failure regardless of the reason.