It is unethical to perform animal testing however that is the optimum way as test subject to gain knowledge about potential human treatments. Animal study and experimentation can be very useful for advancing medical science. One should learn but keep the ethics in mind and prevent unnecessary abuse, pain and suffering to the animal. If it is wrong to inflict pain to a human being, it should be wrong to inflict pain to the animal. If alternate methods can produce valid results, they should be used instead of animal experimentation. If animal testing is required, experiments should be made as humane as possible.