If inquiries are made of people regarding their attitudes towards animal experimentation, there will no doubt be various answers corresponding to the different ethical attitudes today. Three principle points of view are imaginable. The two extremes are: an unrestricted support of all animal experiments; and a radical rejection of any such experiment. These two positions, in all likelihood, are taken by only a minority of the population. The majority will approve of animal experimentation in principle, however, only insofar as it is really necessary to preserve human life. So, the point of controversy arises from the question: When is an animal experiment necessary and indispensable?
Scharmann, W. (1985). Ethical aspects of animal experimentation. In M.W. Fox & L.D. Mickley (Eds.), Advances in animal welfare science 1985/86 (pp. 87-90). Washington, DC: The Humane Society of the United States.