Welfare Science

Lab Animal Mice Cage Design and Welfare

Evidence-based cage design for laboratory mice to improve welfare while maintaining experimental validity.

Key Facts

Standard laboratory mouse cages provide minimal enrichment beyond bedding and food
Cage complexity including nesting material, shelters, and running wheels improves welfare
Individually ventilated cages can restrict normal social communication
Social housing of same-sex pairs or groups is recommended where possible
Environmental complexity reduces stereotypic behaviour and anxiety indicators

Welfare Considerations

Laboratory mice in standard barren cages suffer welfare deficits that can be significantly reduced through modest enrichment provision without compromising most research.

What You Can Do

Support institutions implementing enriched cage standards for mice
Advocate for social housing as the default for laboratory mice
Learn about NC3Rs resources on mouse housing enrichment