For example, animals are human’s first line of defense in knowing the effects of new medicines. “Dogs experienced serious liver damage. That was bad for the dogs but the adverse outcome saved humans from experiencing such a fate” (Dvorsky 2). Knowing that the medicine caused liver damage made the scientists know how to solve the problem and see what else they needed to fix before human trials. Along with that, it is against the law to use medications on humans without being tested on animals first. “Experimenting with animals before testing on people is a crucial human rights protection required by the Nuremberg Code” (Dvorsky 1). Directly experimenting on humans and finding out if the medication’s effects were bad is against human rights. Most importantly, using humans to test drugs instead of animals is inhumane. “As a treatment for HIV, regulations required that it be safely checked in large animals before human trials, in this case, specially bred dogs, to predict how the medicine would react in a living body: (Dvorsky 2). If humans experience horrible effects after injecting a new kind of medication, it would be inhumane to do so, which is why animals are required to test these