Answer:
Who eats a lot of iron without getting sick?
What can answer in any language? What can speak without a mouth? What can sing without an ear?
I can travel from there to here by disappearing, and here to there by reappearing.
What goes through a door but never goes in. And never comes out?
They're up near the sky, on something very tall. Sometimes they die, only then do they fall.
When is it bad luck to see a black cat?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?