Use of tags.
CFR · 2024-01-01 · US · Title 9
Official tags obtained by a dealer, exhibitor, or research facility, shall be applied to dogs or cats in the manner set forth in § 2.50 and in as close to consecutive numerical order as possible. No tag number shall be used to identify more than one animal. No number shall be repeated within a 5-year period.
official document · source cfr-2024 · id 9:§ 2.53