Which of the following is a permanent identification method?

• A. Visual fur color.
• B. Temporary ear tags.
• C. Tail marking.
• D. Ear punching and notching.

Answer: (B)

Permanent identification is a mark that stays with the animal for its lifetime and isn’t easily lost or altered. Ear punching and ear notching create a lasting change in the ear tissue that serves as a durable identifier readable over time. In contrast, visual fur color can change with age or conditions and isn’t a reliable, unique record. Tail markings can wear off or be damaged, and temporary ear tags are designed to be removed or lost, so they don’t provide a permanent record. Therefore, the method that provides a lasting, unambiguous identifier is ear punching and notching.