4-23-07 Identification All live
dogs and cats held on the premises, purchased, or otherwise acquired, sold or otherwise disposed of, or removed from the premises for delivery to a research facility or exhibitor or to another
dealer, or for sale, through an auction sale or to any person for use as a pet, shall be
identified by an official tag of the type described in Sec. 2.51 affixed to the animal's neck by means of a collar made of material generally considered acceptable to pet owners as a means of
identifying their pet
dogs or cats \ 2 \, or shall be
identified by a distinctive and legible tattoo marking acceptable to and approved by the Administrator.