I understand that some people chose not to put collars on their dogs for safety reasons. That to me is a personal choice, and one I can understand. However I don't understand why people put who do choose to put collars on their dogs don't put on ID tags. So many times I've seen dogs loose on the roads wearing collars but no ID tag. Recently my friend took in a dog that had a collar but he wasn't wearing any tags, it took her several days to find the owners. It could have taken minutes if they would have just taken the time to put some ID tags on the collar. She also took the dog in to get scanned for a chip and it didn't have one. When she found the owners she let them know that they needed to get their dog microchipped then go to Petsmart and get a tag made for his collar.