Animal Welfare Assessment Methods and Five Domains Model

The Five Domains Model provides a comprehensive framework for assessing animal welfare that moves beyond preventing suffering to evaluating positive mental states.

Key Facts

The Five Domains Model was developed by David Mellor and is widely adopted in welfare science
The five domains are: nutrition, physical environment, health, behavioral interactions, and mental state
The model explicitly includes positive welfare assessment not just absence of suffering
It can be applied to individual animals, populations, or production systems
The mental state domain synthesizes inputs from all other domains into overall welfare judgment

Welfare Considerations

The Five Domains Model represents a scientific and ethical advance over older welfare frameworks by explicitly including positive mental states as a welfare goal. Where older frameworks focused solely on preventing the five freedoms from being violated, the Five Domains approach asks whether animals are experiencing positive states — pleasure, comfort, curiosity, and engagement — not just the absence of pain, fear, and frustration. This shift is ethically significant: it commits welfare science to actively promoting good animal lives rather than merely preventing bad ones.

What You Can Do

Learn about the Five Domains Model to understand contemporary animal welfare science
Support organizations using Five Domains assessments for farm and zoo welfare evaluation
Advocate for welfare assessments that include positive welfare indicators alongside absence of suffering
Share knowledge about modern welfare science frameworks with producers, regulators, and consumers