I'm sure most of us are aware that animal's rights advocates are generally colored in favor of animal's rights. Sources against something like animal testing from extremely biased organizations such as the PETA are often guilty of using out of context or badly construed evidence and strong language in order to convey its ideologies.
Impartial sources are the best sources, and I think procon.org gives a fairly well-sourced set of arguments for both sides of the animal-testing debate.
I personally believe that animal testing is not only a right, but a moral obligation. Animal testing is largely responsible for saving the lives and reducing the suffering of countless millions of animals and people. It is also of immense utility in many other areas.
I fully support animal testing. Do you? If not, why not?