Animal testing may help human science make greater progress, so that human beings have the ability to save move people lives in the future. Modern science uses animal experiments to invent new medicines to treat various previously untreatable diseases to ensure that millions of patients and future people will survive long-term, healthy lives. Scientists use animal to do experiments instead of using human beings is to decrease the danger of fatal harm. Meanwhile, they can …show more content…
Some animal experiments are aimed to save animals' lives. Animals would get sick as humans do, and human would like to save animals' lives as well, so we invented vaccines to save their lives. In that case, scientists have to do the animal testing to ensure that the vaccines can cure millions of sick animals but not killing them. If scientists did not test on animals, countless animals' lives would have taken by distemper, tetanus and parvovirus [6]. Some animal species avoid the extinction by the testing on animals. For example, the black-footed ferret, the tamarins of Brazil and the California condor [7]. Because of the animal testing, humans have now been able to see those animals on earth and those animals which are have the opportunity to multiply the offspring