Which unit is used to express the average hoof wall growth rate?

• A. cm per month
• B. inch per month
• C. mm per month
• D. mm per week

Answer: (C)

Growth is a small, steady change, so measuring it in millimeters per month provides the precise, practical scale used for hoof management. Hoof walls add only a few millimeters each month, and monthly tracking aligns with typical trimming and shoeing schedules. Using centimeters would blur these small changes, inches isn’t the standard in veterinary practice, and per‑week measurements don’t fit the common monthly management cadence. Therefore, millimeters per month is the best unit.