This is Dead Dog off God Bless You Amigo by the Felice Brothers.

The hammer-on bit looks like this for G, and just do the same for C, except for like with C

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

And in the outro, just add G3 to C, so it's C* = 032310 for that dissonance

G      C                   G
my old friend came home to hide
G      C                   G
my old friend came home to rest

Em         Am
no smiling faces
Bm         C
no sweet embraces
C             D            C
my old friend came home to hide

G    C          G
dead dog in the rain
G    C        G
dead dog in a ditch

Em           Am
ain't got no bone
Bm           C
no long walk home
C        D      C
dead dog in the rain

G         C                 G
I used to hear your whistle whine
G                                     C                   G
but you couldn't keep up and all that rust, it ended your ride

Em                  Am
no dimes for you to lay flat
Bm                   C
no john hardy laying your track
C         D         G
I used to hear your whistle whine

    G    F C
but lord, I wouldn't mind
D
fading, no
     G       F     C
just have to go it all by
D
myself
D
myself

G F C C *
(ohs, has and mms)


Enjoy.