...opinion of this practice.? I disagree with it because it is cruelty to animals and they might have serious side effects after and harm others. Animals also might have different results then humans
it is surely an ethical issue yet i believe it is a terrible Habit of humans to torture the poor animals yet if theres an experiment on cancer treatment and the animals with the medicine out of 100 only 10 died compared to the other one where 80 died.