The stressful life of laboratory animals

In fact, animal studies have played a vital role in almost every major medical advance.

Although researchers are committed to finding new ways to reduce and replace animal testing, current technology cannot yet replace many types of animal research. The Nuffield Council on Bioethics estimates that between 50 and 100 million animals, from flies to monkeys, are euthanized for research each year worldwide, with roughly 90 percent of the vertebrate animals used for research being rodents.