The 3Rs (Replace, Reduce, Refine) framework for laboratory animal welfare, established by Russell and Burch in 1959, remains the foundation of humane experimental practice. Implementation varies widely across institutions and countries.
Laboratory animal welfare sits at the intersection of scientific necessity and ethical obligation. Research using animals has delivered enormous medical benefit - vaccines, surgical techniques, drug safety assessment - but at real cost to individual animals. The 3Rs framework is not merely aspirational; it is legally required in many jurisdictions and increasingly demanded by funders and publishers. The welfare gap between institutions at the frontier of 3Rs implementation and those that meet minimum requirements is significant. Animals in well-enriched environments with proactive pain management and appropriate social housing have better welfare and often produce better science - the two goals align.