Animal testing in pharmaceutical industries has been an ethical issue for some time now. The debate is mainly based on the fact that should we test medical effects on animals or not. In pharmaceutical science, scientists test drugs on animals like mice, rabbits, cats, or dogs to study their side-effects and efficacy. The experiments are actually extremely important because the drugs will be later used by patients in desperate need. In laboratories, the methods of testing are very limited, animal testing is more accurate since human and animals have a lot in common.