Vaccination and preventive healthcare are among the most impactful welfare interventions available to pet owners. Understanding what is essential vs optional helps owners make evidence-based decisions.
Preventive healthcare is the foundation of companion animal welfare. A dog dying of parvovirus or a cat dying of panleukopenia experiences severe suffering that is entirely preventable through vaccination. The welfare calculus strongly favors core vaccination programs for all pets where access is possible. The debate about over-vaccination is legitimate — titre testing in adult animals can reduce unnecessary boosters. But under-vaccination in communities creates outbreak risks that harm both vaccinated and unvaccinated animals. Heartworm disease causes chronic cardiac and respiratory suffering preventable by monthly medication. Flea infestations cause allergic skin disease and secondary infections. Preventive healthcare is welfare-active care, not optional maintenance.