Well, isn't that the point of zombies? That they've been reduced to one single purpose, to consume the living! And while regular not-at-all dead ponies enjoy their tasty hay fries and a cupcake or two, once they get the undead tick on them, all bets are off! They're gonna eat yah! Doesn't matter if you're a duck, bat, griffon or pony, you're on their current meal plan.