In the Warhammer Fantasty, just like in the WH40k Greenskins (orcs, goblins, snotlings and squiggs) are, well... fungi. Sort of:
The Runt pulled himself up out of the hole. A huge mushroom stood above his birthing-hole, wilting and black now it had served its purpose. The goblin lay on his back, panting. [...] The soil in the cavern was thin and rocky. The light was too dim. No orclings would be born there, only runty goblins and snotlings and squigs. Guy Haley "Skarsnik"
My question is, can such creatures be used as a sustenance to the Warhammer vampires? There is a scene in the "Skarsnik" where something tries to suck the life out of him to "use his blood to warm itself up", it never specifies this was a vampire.
Joke about "Vegetarian vampires" dropping in comment in 3, 2, 1....