13 down 'where a frog is while moving' answer given as on the hoof could someone explain it? I could see 'on the hop'-I know its not enough letters but hoof and frog don't go together? or do they? confused . com
en.wikipedia.org/wiki/Frog_(horse)
The frog is a part of a horse's hoof, located on the underside, which should touch the ground if the horse is standing on soft footing.