The California Biomedical Research Association says that most of the medical breakthroughs in the last 100 years have been because of the research done to animals. Testing of new drugs, medicines, and more should be allowed on animals. Many things that are tested on animals are brand new and the effects of them are unknown. At the end of the day, these drugs have to be tested so there aren't bad or even fatal effects. For example, Chimpanzees share 99% of their DNA with humans, and mice have a genetic makeup that is 98% similar to humans. Tests on these animals could show how the medicine would affect humans, thus showing whether the medicine/drug is safe to use on humans. If animal testing wasn't allowed, new drugs would either be tested on humans or they would have minimal testing causing the drug to possibly be more dangerous.
In 2015, 767,266 animals were used in a laboratory for research. In 2010, 97,123 animals had painful experiments done on them with no anesthesia. Testing different things on animals should not be allowed. If the medicines or drugs are not allowed on humans, then why should it be allowed on animals? The dangerous effects of different drugs can hurt and even kill these animals. On top of this, drugs that pass animal tests won't always be safe for humans. The sleeping pill thalidomide passed tests but caused over 10,000 babies to be born with deformities. There was also the arthritis drug, Vioxx passed tests but caused 27,000 heart attacks in humans. Not only is it cruel to the animals, but it's also unethical.