Rollin, B. E. 2012. ENRICHMENT as a moral presupposition of animal research. Enrichment Record 10, 13-16.

Enrichment is therefore not the bighearted largess that much of the research community seems to believe it is. Rather, it represents an obvious step towards creating a decent life for research animals and minimizing avoidable suffering. The fact that providing proper environments that suit the animals' needs and natures has not been done historically, may be inconvenient or more expensive for research facilities, may skew baseline data, or otherwise lead to new practical issues in research management, does not mean that creating such animal management is not a moral imperative. If moral behavior was the easiest and most convenient option, everyone would be moral. The sense of moral discomfort that should arise when one reflects upon the morality of animal research should at least translate into a moral imperative to create living conditions for the animals we use that do not assure a life of misery.