Animal Testing Is Necessary

Animal Testing: Is it the reason that millions of human lives have been cured and saved or is it the unreasonable cause for many animal deaths? Should we stop this kind of testing for the sake of our animals, or should we continue in an effort to find cures for deadly and dangerous diseases? So far, animal research and testing has helped save human lives by finding cures and treatments from diseases such as diabetes, polio, rabies, tetanus, and has helped produce antibiotics to fight infections. However, are we taking advantage of our animal friends and to what extend should animal testing be allowed?
I believe that animal testing should continue and is necessary for numerous reasons. The crucial medical discoveries of the last century were