The problem is in most cases a new drug is not tested on multiple strains. Often we get the result for the CL57/black mouse and nothing more. The end results is

The problem is in most cases a new drug is not tested on multiple strains. Often we get the result for the CL57/black mouse and nothing more. The end results is often meaningless since it is strain specific. Yes I know pets are used in studies, but we use pets to only a fraction of their potential. We have 10s of millions of pets and we use a few thousand at most every year. I am lamenting the waste.