The 3Rs (Replacement, Reduction, Refinement) framework for laboratory animal welfare continues to evolve, with significant advances in technology and policy creating opportunities to reduce animal use in research.
The 3Rs framework continues to deliver meaningful welfare improvements through both regulatory requirements and voluntary adoption by researchers. However, progress is uneven - some research areas have seen dramatic reductions in animal use while others remain dependent on animal models. The most transformative advances combine technological innovation (organs-on-a-chip, AI models) with regulatory reform that actively enables non-animal methods. Consumer and public pressure on companies to adopt 3Rs principles in product testing also drives progress.