In fact, 95 percent of all lab animals are mice and rats, according to the Foundation for Biomedical Research (FBR). Scientists and researchers rely on mice and rats for several reasons. One is convenience: rodents are small, easily housed and maintained, and adapt well to new surroundings. read more
There is also a collective effect, in that once many experiments on mice are done, more data are available about the validity of the animal model, thus making further experiments on mice easier to interpret since scientists know more about how good a model a mouse is for some particular biological process in humans. read more