should people conduct experiment on a animal for the benefits for human beings?

i don't like. but v have no other choice.

You need to be aware that there are animal control protocols which must be followed by all scientists using animals for any purpose during an experiment. They must write out an exact list of what will go on during the course of the experiment and this proposal must then be approved by a board. Regulations insist that testing be done in a way to not inflict unnecessary pain on an animal. Experiments where there are alternative ways to test other than on animals are not approved for testing. Depending what kind of testing you are talking about in many ways results can go to not only benefit humans but also other animals. For example they are currently looking into doing research using dogs with bone cancer instead of mice (we are actually more related to dogs than mice, and mice do not naturally get bone cancer at a high rate). Now the research that they do with these ill dogs will not only go on to aid in the treatment of human bone cancer, but will also better the treatment that we are able to provide to dogs that develop it. I have to say that as long as it is done responsibly, following all appropriate protocols and using as few animals as necessary that animals should continue to be used.

well that is the easy way!! we can not kill or subject human beings in the first instance!! who will offer himself /herself for such tests!! though the theoretical issue is correct , still to have no doubts on the effectiveness of any new formula or molecule it is always tested first on some animals , then on human beings before it is finally approved for public consumption!! and even after that if there are serious side effects it is either removed from circulation or totally banned!!