Answer:
As light as a feather, but you can’t hold it for ten minutes.
When I'm born I fly. When I'm alive I lay. When I'm dead I run.
This thing all things devours: Birds, beasts, trees, flowers; Gnaws iron, bites steel; Grinds hard stones to meal; Slays king, ruins town, And beats high mountains down.
Who eats a lot of iron without getting sick?
To unravel me you need a simple key, no key that was made by locksmith's hand. But a key that only I will understand.
When is it bad luck to see a black cat?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?