Identify the hidden meaning behind this picture?

I have feet, but no legs. Which animal Am I?

How can a man go eight days without sleep?

In the Wild West, you are challenged into a death match by two bounty hunters nicknamed Golden Revolver (GR) and Killer Boots (KB). You accept the challenge. None of you want to waste any of the bullet and so a certain rules are laid down:

1) All of you will shoot in a given order till the last man standing.
2) Each of you shoots only once upon his turn.
3) If any one of you is injured, the other two will finish him off with an iron rod.
4) The worst shooter of all (which is you) shoots first and the best one shoots at the last.

Now, how will you plan things if you know that you hit every third shot of yours, KB hits every second shot and GR hits every shot ?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

What goes through cities and fields, but never moves?

The more you take me, the more you leave me behind.
Who Am I?

In two decks of cards, what is the least amount of cards you must take to be *guaranteed* at least one four-of-a-kind?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??