The main riff is a bottom-string thing that goes like this:

E | -----------------------------------------------------------------------------
B | -----------------------------------------------------------------------------
G | -----------------------------------------------------------------------------
D | -2--2------------------------2--2--------------------------------------------
A | -0--0------------------------0--0--------------------------------------------
E | -------3--0---3--3--0--3--0--------3--0--3--3--0--3--0-----------------------

Or something like that.  I don't know how to convey the rhythm , but if you
know the song you'll get it.

(riff)                                              C  B
I am a hungry wolf and run endlessly with my mate

B                            C   B    C   B
I see the gutter fed in the foolish, outrun and kill the strong

    D                                   E
At daybreak I run, awake to who follows me

               (riff)
I roam , I roam

(riff)                                                   C  B
I am a hungry wolf, and run endlessly with my mate

           C    B             C   B  
Welcome to dripping jaws, the altar of your death

   D                                    E
At daybreak I run, ready to tear up the world

               (riff)
I roam , I roam


(bridge)
     E               C
The hungry wolf, she stares from the hill

    E                     C   B   C   B 
At villagers around the fire

G                      B
She loves her mate, as he loves her

          E                     (riff)
And they live together for life

(riff)                                                C  B
I am a hungry wolf, and I run endlesly with my mate

                C   B
Look across the street, my friend

      C    B
We're waiting for you to slow down

    D                                      E
At daybreak I roam , eyes in the back of my head

                (riff)
I roam , I roam