About the Three Rs
The Three Rs tenet (Replacement, Reduction and Refinement) guides scientists on the ethical use of animals in science.
The Three Rs concept originated from the scientific community and is a widely accepted cornerstone of policies on animal-based science around the world. Ethical animal use requires consideration of animal welfare needs.
In Canada oversight of scientific animal use is the responsibility of the Canadian Council on Animal Care (CCAC) and is described on the CCAC website.