Yes. The collar and identification tags can only be effective in reuniting you and your lost pet if he/she 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/she is easily disoriented.
Approximately 1 in 3 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.