The below graphic is a handy explanation of why we need three forms of ID for our furry friends. This will help ensure that they return to us if they ever get lost! Dogs and cats should have a physical form of ID on them all the times (i.e. a collar with an ID tag). A great back up ID in case your pet’s collar falls off is a microchip that a veterinarian can insert under your pet’s skin. These microchips (as long as they’re registered with your contact information) can be scanned by an animal shelter or veterinarian to link your pet to you! Finally, your municipality may require your pet to be licensed.