Section 955.01 of the Ohio Revised Cose states that every person who owns, keeps, or harbors a dog more than three months of age shall file, on or after the first day of the applicable January, in the office of the county auditor of the county in which the dog is kept or harbored, an application for registration for a period one year or three years or an application for a permanent registration. If your animal is missing, the dog warden can identify your pet by the license being worn and notify you so you may quickly claim him.