Answer:
They are toothy nocturnal immortals.
What get's more wet while it dries?
What can't you see, hear or feel, until it’s too late. What shadows love, and shopkeepers hate?
If there are three cups of sugar and you take one away, how many do you have?
What goes up and down the stairs without moving?
When is it bad luck to see a black cat?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?