If you are making it how I think you are you could keep an iguana in there for a good amount of time. If you turn it on its back or side you might be able to keep a tegu in it for a while.If you are gonna try to use it for some type of breeding project. Hack off the front of the drawers replace with lexan or plexiglass screen in the tops or replace the back with pegboard for ventilation If you can post a picture of the dresser and an Idea what direction you wanna go I can give you better suggestions