What Has Four Legs but Only One Foot?

When talking about an animal, a leg is an ambulatory appendage ending in a foot. Inanimate objects, like chairs, are said to have 'legs', but they are rarely said to have separate 'feet'. Furthermore, a bed has both a 'head end' and a 'foot end', as seen in the Efi-Costarica.com Antique Furniture Guide. Therefore, taking into account a bed's four 'feet' and its 'foot end', it fits the riddle's conditions.