I added the zombies/corpses for a little foreground interest. In my mind's eye, the varghulf is such a powerful force of undeath that it attracts corpses to the surface, like worms after a rain shower.
The dripping blood from the mouth was a last minute thing. I tried to add it using UHU glue but it just didn't work out for me, I need to try that again some time. In the end I snipped a hair from one of my big terrain brushes, glued it into the mouth, painted it red then added a couple of drops of super glue to the end. Then I added more red paint and some satin varnish. It's not perfect but it's good enough for gaming.
Enough chatter, here's more pictures of this fine beast.