What is the most reliable location to take an animal's temperature?

• A. Rectum
• B. Mouth
• C. Ear
• D. Under the foreleg

Answer: (A)

Measuring an animal’s temperature aims to reflect its internal temperature. The rectum provides the reading closest to the body’s core because it’s inside the body and less influenced by outside conditions. Oral measurements can be affected by recent meals or drinking, airflow, and difficulties keeping the animal still, making them less reliable. Ear (tympanic) readings depend on correct placement and ear health, and can vary with ear canal anatomy or wax. Axillary (under the foreleg) readings are highly influenced by ambient temperature and fur, leading to greater inaccuracy. For accuracy, rectal measurement is the best choice.