I can’t find a single reference to this.  I do know it births from high school—twenty years ago at best.

If you know who wrote it or from where it hails, please speak up.

this dog barking at me now—
do I really bother him?
or is he acting out
the old faithful watch-dog routine?

or (and I hope it is this)
is he so lonely locked up
in the snow-filled yard that the sight
of another living thing stirs him?

for I can truly say
I’m as lonely now
as you dog—so
speaking for both of us
bark your crazy head off