It's your official obligation. We have a contract to that effect. The law is the law. Well, The lab assistants were becoming very attached to their little rats. This emotional involvement was interfering with the research being conducted.
Lawyers breed faster.
Lawyers are much cheaper to care for and the humanitarian societies won't jump all over you no matter what you're studying. There are some things even a rat won't do. However, sometimes it very hard to extrapolate our test results to human beings. A man went to a brain store to get some brain for dinner. He sees a sign remarking on the quality of professional brain offered at this particular brain store.