The Five Freedoms framework, developed in 1965, transformed animal welfare thinking but is now being superseded by the Five Domains model that explicitly includes positive welfare states.
The evolution from Five Freedoms to Five Domains represents a welfare science advance: the original framework captured essential minimum requirements but was incomplete in not requiring positive welfare. An animal that is not hungry, not in pain, and not fearful but also has no opportunity for positive experiences — play, curiosity, social engagement, sensory pleasure — is not fully welfare-positive. The Five Domains model makes the obligation to provide positive welfare explicit, raising the welfare aspiration beyond mere absence of harm to active promotion of flourishing.