Alternatives to Animal Testing: Progress and Promise

The development and adoption of non-animal research methods represents one of the most important opportunities to reduce animal suffering in scientific research.

Key Facts

Approximately 115 million animals are used in research globally each year
Mice, rats, and zebrafish account for the majority of research animals
Organoids, organ-on-chip systems, and computer models are replacing animal use in many areas
The EU has committed to a phaseout of animal testing in cosmetics and some chemicals
Validation of new methods for regulatory acceptance remains a major bottleneck

Welfare Considerations

Animals in research experience a wide range of welfare harms from mildly discomforting procedures to significant suffering during cancer, pain, and toxicology studies. The 3Rs framework of Replace, Reduce, and Refine provides the ethical scaffold for welfare improvement, but implementation depends on available alternatives and regulatory acceptance. Investment in alternative method development and validation has accelerated dramatically, with some fields already achieving near-complete replacement of animal use.

What You Can Do

Support research funding for non-animal alternatives development and validation
Choose cosmetics and personal care products not tested on animals
Advocate for regulatory adoption of validated non-animal methods
Support organizations like the NC3Rs working on 3Rs implementation