The Five Domains model represents the most comprehensive current framework for animal welfare assessment, extending the original Five Freedoms to explicitly include mental state assessment as a welfare domain.
The Five Domains model represents the conceptual infrastructure of modern animal welfare science. By making mental state an explicit domain alongside physical and behavioral measures, it provides a framework that acknowledges the psychological dimension of animal wellbeing alongside physical health. The evolution from Five Freedoms — which were expressed as negatives to be avoided — to Five Domains that include positive welfare requirements reflects the maturation of the field from welfare as absence of suffering to welfare as presence of positive experience. Understanding this framework helps welfare consumers, advocates, and policymakers evaluate welfare claims more critically and support approaches that genuinely address the full scope of animal welfare rather than only the most visible physical dimensions.