Mick Pennell, of Kings High School, asks :-

Why do we have toenails? What use are they?

Jim Reid, the Associate Dean of Postgraduate Medical Science at the Otago Medical School, responded.

Toenails, like fingernails are present as part of our evolutionary process in the animal kingdom. All mammals have nails or claws at the ends of their digits, and these were useful for scratching, digging, climbing and for defence. Toenails are not much use to humans now, but how ever would you be able to open a pocket knife without fingernails!