Welfare Science

Lab Animal Social Housing Standards

Social housing for laboratory animals is a key refinement under 3Rs principles that significantly improves welfare in research facilities.

Key Facts

Mice, rats, rabbits, and non-human primates are typically social species that suffer in isolation
Research demonstrates social housing reduces stress biomarkers and improves welfare indicators
Fear of social conflict has historically led to single-housed laboratory animals
Modern housing protocols for mice now default to group housing in many facilities
Pair and group housing of non-human primates is required under EU and UK legislation

Welfare Considerations

Social isolation causes chronic stress and psychological suffering in social laboratory animals. Implementing social housing as the default approach across all suitable species is one of the most impactful welfare refinements available.

What You Can Do

Support 3Rs research centres developing social housing protocols and recommendations
Advocate for social housing as the default in laboratory animal regulations
Engage with institutions about their social housing policies for research animals
Support funding for research that develops and validates social housing approaches
Promote replacement and reduction as higher priority 3Rs strategies alongside refinement