The Five Domains of Animal Welfare

The Five Domains model has replaced the older Five Freedoms as the leading scientific framework for understanding and assessing animal welfare across species.

Key Facts

The Five Freedoms (1965) addressed freedom from hunger, discomfort, pain, fear, and to express behavior
The Five Domains model (Mellor et al. 2020) adds mental or subjective experience as a fifth domain
Domain 1: Nutrition; Domain 2: Physical Environment; Domain 3: Health; Domain 4: Behavior; Domain 5: Mental State
The model explicitly incorporates positive welfare states, not just the absence of negatives
Zoos, farms, and laboratories are increasingly adopting the Five Domains for welfare assessment

Welfare Considerations

The shift from Five Freedoms to Five Domains represents a scientific maturing of animal welfare thinking. Freedoms framed welfare negatively — as the absence of suffering. Domains incorporate positive experiences: pleasure, comfort, curiosity, playfulness, and satisfaction. This reframing is practically important: a welfare plan that only prevents suffering but provides no positive experiences falls short of modern standards. Good welfare means animals get to thrive, not just survive.

What You Can Do

Learn about the Five Domains framework through the Animal Welfare Science Hub
Apply Five Domains thinking when evaluating animal facilities or husbandry practices
Advocate for welfare assessment tools based on the Five Domains in farm certification
Share this more complete welfare framework with educators and policymakers