Animal Welfare and the Five Domains Model

The Five Domains model extends the Five Freedoms to encompass positive welfare states, providing a more comprehensive framework for welfare assessment.

Key Facts

The Five Domains model was developed by David Mellor in New Zealand in the 1990s and updated in 2017
The four physical domains are nutrition, environment, health, and behavioral interaction
The fifth domain is mental state — the integration of positive and negative experiences
The updated model explicitly requires assessment of positive welfare, not just absence of suffering
The Five Domains model is increasingly used in welfare auditing and research globally

Welfare Considerations

The Five Domains model represents an evolution beyond the Five Freedoms that addresses a critical limitation: the original framework focused primarily on preventing negative states, without explicitly requiring the promotion of positive ones. The addition of mental state as a fifth domain — with explicit attention to positive experiences including pleasure, comfort, and engagement — shifts welfare assessment from harm prevention to wellbeing promotion. This shift has practical implications: a farm could technically comply with all Five Freedoms while still providing an environment of profound behavioral deprivation and absence of positive experience. The Five Domains model provides a framework for assessing and demanding more.

What You Can Do

Support welfare certification schemes that use the Five Domains model or equivalent positive welfare framework
Advocate for positive welfare criteria — not just harm prevention — in animal welfare legislation
Learn about the Five Domains model and share it with others engaged in animal welfare
Support research into positive welfare indicators for different species
Apply a Five Domains lens to evaluate the welfare claims of food products you purchase