Answer:
Long and think, red within, with a nail at the end.
They're up near the sky, on something very tall. Sometimes they die, only then do they fall.
This is needed both for courage and hardcover books.
What is often returned, but never borrowed/
I'm a bacteria that causes typhoid What's my name ?
I have two eyes in the front and a lot of eyes on my tail
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?