What does this rebus puzzle means ?

Can you find the hidden animal in the picture below?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

On a special event at the prison, 5 prisoners John, Jacob, Krist, Tang, and Dang given a chance to go to a sauna and can bring one thing with them.

Following are the things that the prisoners bring with them.
John: A soda
Jacob: Thermos
Krist: Book named "How to kill"
Tang: A Walkman
Dang: Harmonica

Since it is a Sauna, no one can see each other. After a while When the steam is switched, Tang was found dead and there was blood all around.
J Bond was called and he instantly come to know who can be the murderer. How?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

One night, a man runs away from home. He turns left and keeps running. After some time he turns left again and keeps running. Later, he turns left one more time and runs back home—but when he gets home, he finds a man in a mask. Who was the man in the mask?

Can you make a six-letter word using the letters N, A and B ?