Killing of animals in science – is it always inevitable?

Within the ethical discussion of animal experimentation, the questions of why, how many, and under what circumstances animals are (or should be) used takes precedence over the fact that virtually all lab animals are killed after their scientific utility. When death is indeed an issue, the discussion often concerns the circumstances of death, from a welfare point-of view. This is a likely consequence of two factors: firstly, killing being seen as an inevitable consequence of animal use and, se...