Welfare Science

Lab Animal Welfare Mice Enrichment Advanced

Environmental enrichment for laboratory mice reduces stress, improves welfare, and produces more valid experimental data through better baseline physiology.

Key Facts

Standard laboratory housing for mice is barren and fails to meet their behavioural needs
Nesting material is the single most impactful enrichment for laboratory mice
Enrichment including shelters, bedding depth, and running wheels reduces anxiety behaviour
Enrichment does not compromise experimental validity and often reduces variance
The 3Rs framework (Replace, Reduce, Refine) explicitly includes housing enrichment as Refinement

Welfare Considerations

Providing meaningful enrichment for laboratory mice is both an ethical imperative and good science; the assumption that enriched housing confounds research is unsupported by evidence.

What You Can Do

Support the 3Rs and laboratory animal enrichment through research funding choices
Advocate for enriched housing as the standard in all research institutions
Engage with the NC3Rs and similar bodies promoting laboratory animal welfare