If your dog got sick and were dying, do you think you could cure him by conducting research on your healthy aunt Edna? Since it is not possible to cure a sick animal by conducting research on healthy humans, is it possible to cure a sick human by conducting research on a healthy animal?
Every species of animal has a different biochemistry. This would mean that it is impossible to conclude connections between non-human animals and human beings with absolute certainty. This would also be true in comparing one species of animal to another. It is also impossible to recreate a spontaneous disease in the lab in both animals and humans. Infectious diseases are the exception. Remember though that animals do not get human infectious diseases and we do not get theirs.
Unfortunately, most medical research is based on