A mature horse's hoof growth per month falls within which range?

• A. 0.15-0.25 inches
• B. 0.38-0.50 inches
• C. None of these
• D. 0.25-0.38 inches

Answer: (D)

Hoof growth rate in mature horses is slow and steady. Most healthy adult horses add about 6–9 millimeters of hoof wall each month, which is roughly 0.25–0.38 inches. This range captures normal variation from season, nutrition, and workload. It helps explain why trimming is done every several weeks to maintain proper hoof length and balance. If a horse has good nutrition and is active in warmer months, growth can be toward the higher end; in winter or with illness, growth may slow toward the lower end. The smaller estimate would understate typical growth, while a much larger estimate would overstate it, so 0.25–0.38 inches per month best fits normal mature hoof growth.