Animal welfare science is a rigorous, growing discipline that provides the evidence base for improving the lives of billions of animals. Understanding how welfare science works empowers advocates, policymakers, and consumers to make more effective choices.
Animal welfare science occupies a unique position: it is both a descriptive discipline (measuring and characterising animal experiences) and a normative one (providing the evidence base for ethical decisions about how animals should be treated). The field has transformed our understanding of which animals can suffer, what forms their suffering takes, and which interventions most effectively reduce it. Key advances include the development of the Five Domains model — which explicitly includes mental state as a welfare domain — and the growing acceptance that positive welfare states (pleasure, play, curiosity) are as important as preventing negative ones. The challenge now is not primarily knowledge generation but knowledge translation: ensuring that robust welfare science findings reach policymakers, farm assurers, veterinarians, and consumers in forms that drive behaviour change at scale.