Using/killing animals can only done in 2 cases:
SURVIVAL
and when controlled as foodsource.
Don't take any more animal life than you would if we weren't urban, if we didn't take medication.
Fur coats, testing, ivory. SAY NO!
New medication? testing it on animals implies that you aren't sure of your abilities to create safe medication. The nature has a cure for everything, acapuncture does work.