I don't put the dog's name on there, but do put all our phone numbers. On a few tags I also put microchip numbers on them, along with their photo on the tag (dogtagart.com) We use a rubit clip to put on various collars. If we have workers inside the house I put a collar on the boys with our phone numbers embroidered on them. Normally our boys don't wear collars inside because of their extreme play and the risk involved.