Answer:
I fly through the air on small feathered wings, seeking out life and destroying all things.
What measures out time. Until in time all is smashed to it?
What gets wet while drying?
I am the greatest teacher out of them all, but alas in the end I kill my pupils.
I have four legs but no tail. Usually I am heard only at night.
What is so fragile that saying its name breaks it?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?