i have noticed for the past 2 or 3 yr when you go to the vets to take your dog for shots the first thing thay ask "do you want an ID chip in ,{incase they get lost,they can be scanned} "last year on the mule groups this came up,out west they were trying to start it, asking for volentiers, none of us mule ppl are signing up. i didnt get my dogs chipped, i figure if they runaway,i hope there in a better hotel LOL is dog catcher really gonna scan them? i think not.is some one who finds your dog gonna take him to vet to scan him? do they think were stupid? i have recived paper work to chip,volentiary.. i filled it in the recycle box..R