Tommy does not wear license but I ordered him a necklace with id plate on it. It has his name on the front and a cute picture of a doggie with a newspaper and on the back of the plate it has all the information where to call: my cell and HomeAgain phone with microchip ID#. You can also put medicine info if needed. I put on his tag "needs medicine" because I do not want people to keep him if found.
The chain is stainless steel (you can also order it in real gold or sterling silver). It is very quiet because there is nothing hanging down and it does not bother Tommy at all. I have a piece of mind now. He is a sneaky kid and loves to explore outsides. I take it off at night just like my own jewlery.
I got it from
http://www.oneida-medical-jewelry.com/
It is medical IDs for people but I called the company and asked if they can make a bracelet with longer chain for my teapot furkid. They did a great job.