The Black Dog Eats the City

You feel it before you see it, The Black Dog - the Cimmerian demon with baleful breath, diminishing the light wherever it tracks...

...the size of a large calf, its footfalls are silent - the portents of death hidden behind caliginous evil.
It squeezes into the soul. You know it because he scrunches your stomach into a tight paper-ball and forces it out through your anus.
Then you're a goner...

You just can't win