Answer:
I am three simple words everyone wants to hear. Three simple words such simple words and yet...life changing...
I hide but my head is outside. What am I?
I'm white and used for cutting and grinding. When I'm damaged, humans usually remove or fill me. For most animals I am a useful tool. What am I?
I fly yet I have no wings. I cry yet I have no eyes. Darkness follows me. Lower light I never see.
I am needed for most animals and hardcover books. What am I?
What made Cyclops quit teaching?
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic