Which minerals are listed as needed for claw growth?

• A. Sodium
• B. Calcium, Phosphorus, Magnesium
• C. Iron
• D. Copper, Zinc, Selenium, Molybdenum

Answer: (D)

Growth of the claw relies on the keratin-rich horn and the surrounding tissue, which need trace minerals as cofactors for enzyme systems that build and stabilize that tissue. Copper and zinc are central players: copper enables cross-linking of collagen and elastin, helping maintain the claw’s structural base, while zinc drives keratin production and the function of skin and horn-forming cells. Selenium supports antioxidant defenses during rapid tissue growth, protecting claw tissues as they form. Molybdenum, present in small amounts, interacts with copper metabolism to help keep copper-dependent processes working properly. In contrast, sodium functions mainly as an electrolyte, and calcium, phosphorus, and magnesium are more tied to bone and mineral balance rather than the keratinous horn itself; iron is primarily about oxygen transport. Therefore, the minerals listed—copper, zinc, selenium, and molybdenum—are the ones associated with healthier claw growth.