Answer:
What is it something that you always have but you always leave behind?
It is sometimes known to have silver linings.
Something wholly unreal, yet seems real to I. Think my friend, tell me where does it lie?
Two little holes in the side of a hill. Just as you come to the cherry-red mill.
The strangest creature you'll ever find has two eyes in front and a hundred behind.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?