To Test Or Not To Test

Testing medicine on animals is a fairly controversial subject. Though it has helped with many discoveries. I personally think that this is wrong. First because it is downright cruel. Scientists can deliberatly make an animal sick and if the medicine doesn't work, the animal will die. That thought makes me sick. Second, the testing can harm them. Their bodies might not be used to this. Why would you want to go so low just for medical purposes? Third, how do you know the animal is okay with having a drug injected into them? That is like an animal doing the same thing to us when we clearly don't want them to do it. Plus there might be some thing else we can test on. We might not find out for a long time.