Yes. The tag can only be effective in reuniting you and your lost pet if he is wearing it. There is always a possibility of a pet going on an "adventure" away from home. In fact, it is the pet that "never gets outside" that is less likely to return on their own because he is easily disoriented. One in three pets will get lost at some point in their lives.  Without wearing proper identification, 90% of them will not be returned. For more information, contact Animal Services at (479)444-3456.