Tyler,
So..... you really think that this type of packaging -- a box with your business card (showing a chameleon and saying that you are a cham seller); printed with "perishable" in red; and being warm on both ends -- really fools the folks at UPS into thinking there is not a reptile in there???
Heck, even before we used labels with "live animal", we found the UPS people would ask. And we didn't put our card on the box!
So, we chose to go the other direction. We made labels with our "UPS approved reptile shipper" number, phone numbers, etc. - and slap that on the top of each box. We also have a label for "live, harmless lizard" and the species (in latin). Why??? The Lacy Act, for one. We learned from the US Fish & Wildlife folks that we are required to indicate the species being shipped, and that complies with the Lacy Act. We didn't like the implication that we might be hiding something. This way, the shippers and inspectors have less reason to suspect your packages.
We have been using the new labels for almost 5 years. We have had no major problems - no surprise inspections; no battered packages; and no fatalities (we use UPS). I think this is a good argument for the "other side" of this coin.
To be candid - we have received many "unmarked" boxes - and these were more often the ones that sustained damage - if any.
This also led me to create a new method of packaging the critters inside. We started using 1" poly foam instead of styrofoam. It pads the single (sacked) animals far better - especially when they are large bearded dragons or blue-tongue skinks. We shipped an adult melleri this way - it arrived in perfect condition!
Food for thought.... 

www.reptayls.com