Welfare science has evolved from the Five Freedoms framework to the Five Domains model, which better captures positive welfare states and animal agency.
The evolution from Five Freedoms to Five Domains reflects the maturation of animal welfare science from a deficit-reduction model to one that recognizes animals as sentient beings capable of positive experiences. The Five Freedoms framed welfare as freedom from negative states — hunger, discomfort, pain, disease, fear. The Five Domains framework adds the mental dimension explicitly, recognizing that the subjective experience of the animal is central rather than peripheral to welfare assessment. This evolution has practical implications — welfare programs now assess positive behavioral indicators like play and exploration alongside the absence of disease and injury, requiring environments that actively promote flourishing rather than merely preventing suffering.