Did you know that millions of animals suffer in the U. S. just because of animal testing? When these animals are getting tested, they feel pain, but cannot react to it because they cannot speak up. To begin with, animal testing is not effective. Many animals do not get all of the same diseases that humans get. Animals may have similar body functions, but they can be prone to and resistant to different diseases which makes them unreliable to be tested. For example, cancer was cured in mice years ago, but human cancers are yet to be cured. This clearly shows that animals need to not be tested because of health and body differences. In addition to body functions, animal 's DNA are different than a human being’s. According to ProCon.org,