In what location is the Brucella vaccine tattoo applied?

The Brucella vaccine tattoo is correctly applied in the right ear of the animal. This specific location serves multiple purposes. Firstly, it denotes that the animal has been vaccinated against Brucella, which is important for disease control and prevention, particularly in livestock. Secondly, the right ear is a standardized location that facilitates easy identification for veterinarians, farmers, and animal health officials during inspections or herd management practices.

Applying the tattoo in a consistent location helps maintain an accurate vaccination history for the animals, which is crucial for disease traceability and biosecurity measures within herds. The other options, such as the left ear, both ears, or the tail, do not adhere to these established standards for tattooing, thus potentially complicating identification and management of vaccinated animals.