Because I was playing skyrim earlier, here's a riddle I came across:

There's a snake, a fox, a bear, and a wolf.

The riddle goes:

The first fears all, the second fears none.

The third eats what it can, preferably number one.

The fourth fears the second, but only when alone.

What's the order?

Just an interesting puzzle, and at 3:30 in the morning, this actually took me a couple tries. :P