Tattoo Your Dog for Certain Identification "Tattooing your dog provides permanent, unalterable identification. This is extremely useful if your dog has merely strayed. Humane societies and dog wardens look for tattoo identification." Tattoo-a-Pet was founded in 1972. They are still around stating that a tattoo is better than a microchip on your pet. So here is the scoop. From my Google research, in some states, laboratories are not permitted to use animals that have been tattooed for identification. Essentially, let's say your pet is lost and has no identification. There is nothing stopping that pet from getting picked up for use in lab testing. Mirco-chips....well I don't know. Thank might be something you need to look at. I do know that my microchip for my dog has to be renewed. So not paying and renewing that registration might not protect my pet or get them back to me if they get lost and picked up. If you choose to tattoo your pet...