Where is the official tattoo applied to permanently identify a RB1-vaccinated heifer?

• A. Right ear
• B. Left ear
• C. Inner lip
• D. Tattoo is not required if animal is given an official ear tag

Answer: (A)

Permanent, official identification for RB1-vaccinated heifers is achieved with a tattoo in the right ear. This placement provides a durable, lifelong mark that remains with the animal even if other forms of identification are lost or removed, which is why it’s the standard method in official records and regulatory checks. The left ear and inner lip are not used for this official tattoo in typical brucellosis programs, and having an ear tag does not replace the need for the permanent right-ear tattoo.