Biomedical research uses millions of animals annually, with welfare standards improving through 3Rs implementation but significant gaps remaining in many research systems.
Biomedical research animal welfare sits in genuine ethical tension - animal models have contributed to medicine that saves millions of human and animal lives, but the welfare cost is real and substantial. Welfare improvement through the 3Rs has made real progress: new statistical methods reduce animal numbers, validated alternative models replace some animal use, and analgesia and refinement reduce suffering in necessary experiments. However, implementation is inconsistent globally, pressure to reduce costs works against welfare improvements, and some research cultures still treat welfare as a compliance exercise rather than a genuine ethical obligation. Welfare-positive research culture requires institutional commitment beyond regulatory minimums.