Turn off certain mobs

Could it be made so that you could turn off certain mobs (without going into the code) (example turn off all mobs but zombies)

http://www.cataclysmdda.com/smf/index.php?topic=159.0

a mod that does the exact thing

http://www.cataclysmdda.com/smf/index.php?topic=151.msg1215

Try using keywords for your question in the search bar, or failing that just have a look at least a few pages back in the appropriate area.
I hope that has everything that you need to know.

The mod linked by warwolf0315 does remove certain monsters, but it also removes other things like labs and CBMs.